Focus Beam Profiler for Laser Additive Manufacturing

Focus beam profiler for the measurement of focus spot size and position of high power YAG lasers

FBP | Focus Beam Profiler for Laser Additive Manufacturing

Spectral Response

1064nm (1030nm, 1070nm). Others on request

Max input power

2 kW@single-mode; 2.2 kW@multi-mode

Minimum beam size

30 µm with 3X option (75 µm standard)

Accuracy

Waist Position: ±100μm; Waist Size & M2: 2-4%

Interface

USB3.0

Software

Includes RayCi Pro license

Tag: LBD: FBP/AM Brand: CINOGY Technologies

Focus Beam Profiler for High-Power Lasers in Additive Manufacturing

The Focus Beam Profiler (FBP) from CINOGY Technologies is a compact, camera-based instrument for measuring the focused spot of high-power fiber, disk and solid-state lasers at up to 2 kW. It is built for the working plane of laser powder bed fusion (LPBF, also called SLM or DMLS) and selective laser sintering (SLS) machines, where focus spot size and absolute focus position decide melt pool stability and part quality.

Up to 2 kWsingle-mode (2.2 kW multi-mode)

30 µm to 1.2 mmfocused spot range

±50 µmmeasurement position accuracy

2 to 4%waist size and M² accuracy

ISO 11146parts 1 and 2, in RayCi Pro

CINOGY Focus Beam Profiler measuring a focused high-power laser beam — The FBP sits at the machine’s working plane and captures the focused beam directly.

How the FBP measures a focused high-power beam

CINOGY designed the FBP around a multi-stage, high-performance attenuator that brings a kilowatt-class focused beam down to a level a high-resolution CMOS sensor can record without distortion. The attenuated beam reaches the sensor directly, without imaging optics, so there are no power-dependent imaging errors to correct. An internal translation stage moves the measurement plane through the caustic while the profiler itself stays fixed in the machine, which keeps setup fast and repeatable on the production floor.

The whole sequence is controlled by RayCi Pro software, which fits the caustic according to ISO 11146-1 (stigmatic and simple astigmatic beams) and ISO 11146-2 (general astigmatic beams). A water-cooled absorber handles the dumped power, an AR-coated protection window guards the Ø18 mm aperture, and a clean-air flushing input keeps powder and spatter off the optics.

Waist diameterSecond-moment spot size at focus

Absolute waist position (z0)Where the focus actually sits relative to the reference plane

Rayleigh lengthUsable depth of focus around the waist

M² and divergenceBeam quality and far-field spread

AstigmatismSeparate x and y waists for general astigmatic beams

Power (optional)Integrated power reading, 5 to 7% accuracy

RayCi Pro caustic analysis of a focused beam measured with the FBP — RayCi Pro reports waist diameter, waist position, Rayleigh length and M² from the measured caustic.

Why focus verification matters in laser powder bed fusion

Peak irradiance scales with the inverse square of spot diameter, so a focus that drifts even a fraction of a Rayleigh length changes the energy delivered to the powder bed. Heating of scan optics, contaminated protection windows and service work can all move the focus without any visible sign. Axiom Optics works with additive manufacturing teams that use the FBP for machine acceptance, scheduled preventive maintenance, comparison between machines in a fleet, and process qualification when changing laser power or optics. The explorer below shows how sensitive your own spot is.

New: FBP-3KF for 2 kW lasers

The FBP-3KF extends the proven design of the widely used 400 W and 1 kW models to the latest generation of 2 kW single-mode and 2.2 kW multi-mode sources. Its multi-stage attenuator manages the thermal load of the full process beam so that waist diameter, waist position and M² are reported without distortion at maximum power. CINOGY also gave it the longest measurement range in the family, ±24 mm, and the tightest waist position accuracy, ±75 µm, with unlimited measurement time under water cooling. The compact 98 x 98 x 159 mm housing still fits into build chambers for quick quality checks directly on the production floor.

CINOGY FBP-3KF focus beam profiler for 2 kW lasers — The FBP family shares one design across 400 W, 1 kW and 2 kW versions.

Find the right Focus Beam Profiler

Caustic and focus-shift explorer

Pick a focused spot and beam quality to see the caustic the FBP has to capture, whether each model’s measurement range covers it, and how much peak irradiance a small focus shift costs.

Waist diameter (second moment, D4σ)

Beam quality M²

1.1 single-mode fiber 1.5 near single-mode 6 multi-mode

Rayleigh length z_R1.07 mm

Depth of focus (2 z_R)2.14 mm

Half-angle divergence18.7 mrad

Beam NA (approx.)0.019

Short Rayleigh length. A 0.25 mm focus shift already cuts peak irradiance by 5%, so focus position needs to be verified, not assumed. The FBP’s ±100 µm waist position accuracy is 9% of z_R here.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	3X option	3X option	No
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	40.2 µm (+0.4%)	−0.9%
0.25 mm	41.1 µm (+2.7%)	−5.2%
0.5 mm	44.2 µm (+10.4%)	−18.0%
1 mm	54.8 µm (+37.0%)	−46.7%
2 mm	84.9 µm (+112.3%)	−77.8%

Rayleigh length z_R0.78 mm

Depth of focus (2 z_R)1.57 mm

Half-angle divergence25.5 mrad

Beam NA (approx.)0.026

Short Rayleigh length. A 0.25 mm focus shift already cuts peak irradiance by 9%, so focus position needs to be verified, not assumed. The FBP’s ±100 µm waist position accuracy is 13% of z_R here.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	3X option	3X option	No
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	40.3 µm (+0.8%)	−1.6%
0.25 mm	42.0 µm (+5.0%)	−9.3%
0.5 mm	47.5 µm (+18.7%)	−29.0%
1 mm	64.9 µm (+62.2%)	−62.0%
2 mm	110 µm (+174.3%)	−86.7%

Rayleigh length z_R0.20 mm

Depth of focus (2 z_R)0.39 mm

Half-angle divergence102 mrad

Beam NA (approx.)0.102

Short Rayleigh length. A 0.25 mm focus shift already cuts peak irradiance by 62%, so focus position needs to be verified, not assumed. The FBP’s ±100 µm waist position accuracy is 51% of z_R here.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	No (min 300 µm)	No (min 300 µm)	No (min 300 µm)
Beam NA within limit	No (max 0.05)	No (max 0.04)	No (max 0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	44.9 µm (+12.3%)	−20.7%
0.25 mm	64.9 µm (+62.2%)	−62.0%
0.5 mm	110 µm (+174.3%)	−86.7%
1 mm	208 µm (+420.6%)	−96.3%
2 mm	411 µm (+926.7%)	−99.1%

Rayleigh length z_R4.27 mm

Depth of focus (2 z_R)8.54 mm

Half-angle divergence9.4 mrad

Beam NA (approx.)0.009

Moderate Rayleigh length. Small focus shifts are tolerated, and the full ISO 11146 caustic needs ±8.54 mm of travel, which the fit check below compares per model.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	80.0 µm (<0.1%)	−0.1%
0.25 mm	80.1 µm (+0.2%)	−0.3%
0.5 mm	80.5 µm (+0.7%)	−1.4%
1 mm	82.2 µm (+2.7%)	−5.2%
2 mm	88.3 µm (+10.4%)	−18.0%

Rayleigh length z_R3.13 mm

Depth of focus (2 z_R)6.26 mm

Half-angle divergence12.8 mrad

Beam NA (approx.)0.013

Moderate Rayleigh length. Small focus shifts are tolerated, and the full ISO 11146 caustic needs ±6.26 mm of travel, which the fit check below compares per model.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	80.0 µm (+0.1%)	−0.1%
0.25 mm	80.3 µm (+0.3%)	−0.6%
0.5 mm	81.0 µm (+1.3%)	−2.5%
1 mm	84.0 µm (+5.0%)	−9.3%
2 mm	94.9 µm (+18.7%)	−29.0%

Rayleigh length z_R0.78 mm

Depth of focus (2 z_R)1.57 mm

Half-angle divergence51.1 mrad

Beam NA (approx.)0.051

Short Rayleigh length. A 0.25 mm focus shift already cuts peak irradiance by 9%, so focus position needs to be verified, not assumed. The FBP’s ±100 µm waist position accuracy is 13% of z_R here.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	No (min 300 µm)	No (min 300 µm)	No (min 300 µm)
Beam NA within limit	No (max 0.05)	No (max 0.04)	No (max 0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	80.6 µm (+0.8%)	−1.6%
0.25 mm	84.0 µm (+5.0%)	−9.3%
0.5 mm	94.9 µm (+18.7%)	−29.0%
1 mm	130 µm (+62.2%)	−62.0%
2 mm	219 µm (+174.3%)	−86.7%

Rayleigh length z_R9.61 mm

Depth of focus (2 z_R)19.2 mm

Half-angle divergence6.2 mrad

Beam NA (approx.)0.006

Moderate Rayleigh length. Small focus shifts are tolerated, and the full ISO 11146 caustic needs ±19.2 mm of travel, which the fit check below compares per model.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Partial	Partial	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	120 µm (<0.1%)	<0.1%
0.25 mm	120 µm (<0.1%)	−0.1%
0.5 mm	120 µm (+0.1%)	−0.3%
1 mm	121 µm (+0.5%)	−1.1%
2 mm	123 µm (+2.1%)	−4.2%

Rayleigh length z_R7.05 mm

Depth of focus (2 z_R)14.1 mm

Half-angle divergence8.5 mrad

Beam NA (approx.)0.009

Moderate Rayleigh length. Small focus shifts are tolerated, and the full ISO 11146 caustic needs ±14.1 mm of travel, which the fit check below compares per model.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Partial	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	120 µm (<0.1%)	<0.1%
0.25 mm	120 µm (+0.1%)	−0.1%
0.5 mm	120 µm (+0.3%)	−0.5%
1 mm	121 µm (+1.0%)	−2.0%
2 mm	125 µm (+3.9%)	−7.5%

Rayleigh length z_R1.76 mm

Depth of focus (2 z_R)3.52 mm

Half-angle divergence34.1 mrad

Beam NA (approx.)0.034

Short Rayleigh length. A 0.25 mm focus shift already cuts peak irradiance by 2%, so focus position needs to be verified, not assumed. The FBP’s ±100 µm waist position accuracy is 6% of z_R here.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	No (min 300 µm)	No (min 300 µm)	No (min 300 µm)
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Yes	Yes	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	120 µm (+0.2%)	−0.3%
0.25 mm	121 µm (+1.0%)	−2.0%
0.5 mm	125 µm (+3.9%)	−7.5%
1 mm	138 µm (+15.0%)	−24.4%
2 mm	182 µm (+51.3%)	−56.3%

Rayleigh length z_R60.1 mm

Depth of focus (2 z_R)120 mm

Half-angle divergence2.5 mrad

Beam NA (approx.)0.002

Long Rayleigh length. This focus is forgiving, but a complete ISO 11146 caustic would need ±120 mm of travel. Extended measurement ranges are available on request.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Range on request	Range on request	Range on request

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	300 µm (<0.1%)	<0.1%
0.25 mm	300 µm (<0.1%)	<0.1%
0.5 mm	300 µm (<0.1%)	<0.1%
1 mm	300 µm (<0.1%)	<0.1%
2 mm	300 µm (+0.1%)	−0.1%

Rayleigh length z_R44.0 mm

Depth of focus (2 z_R)88.1 mm

Half-angle divergence3.4 mrad

Beam NA (approx.)0.003

Long Rayleigh length. This focus is forgiving, but a complete ISO 11146 caustic would need ±88.1 mm of travel. Extended measurement ranges are available on request.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Range on request	Range on request	Range on request

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	300 µm (<0.1%)	<0.1%
0.25 mm	300 µm (<0.1%)	<0.1%
0.5 mm	300 µm (<0.1%)	<0.1%
1 mm	300 µm (<0.1%)	−0.1%
2 mm	300 µm (+0.1%)	−0.2%

Rayleigh length z_R11.0 mm

Depth of focus (2 z_R)22.0 mm

Half-angle divergence13.6 mrad

Beam NA (approx.)0.014

Moderate Rayleigh length. Small focus shifts are tolerated, and the full ISO 11146 caustic needs ±22.0 mm of travel, which the fit check below compares per model.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Partial	Partial	Yes

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	300 µm (<0.1%)	<0.1%
0.25 mm	300 µm (<0.1%)	−0.1%
0.5 mm	300 µm (+0.1%)	−0.2%
1 mm	301 µm (+0.4%)	−0.8%
2 mm	305 µm (+1.6%)	−3.2%

Rayleigh length z_R240 mm

Depth of focus (2 z_R)480 mm

Half-angle divergence1.2 mrad

Beam NA (approx.)0.001

Long Rayleigh length. This focus is forgiving, but a complete ISO 11146 caustic would need ±480 mm of travel. Extended measurement ranges are available on request.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Range on request	Range on request	Range on request

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	600 µm (<0.1%)	<0.1%
0.25 mm	600 µm (<0.1%)	<0.1%
0.5 mm	600 µm (<0.1%)	<0.1%
1 mm	600 µm (<0.1%)	<0.1%
2 mm	600 µm (<0.1%)	<0.1%

Rayleigh length z_R176 mm

Depth of focus (2 z_R)352 mm

Half-angle divergence1.7 mrad

Beam NA (approx.)0.002

Long Rayleigh length. This focus is forgiving, but a complete ISO 11146 caustic would need ±352 mm of travel. Extended measurement ranges are available on request.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Range on request	Range on request	Range on request

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	600 µm (<0.1%)	<0.1%
0.25 mm	600 µm (<0.1%)	<0.1%
0.5 mm	600 µm (<0.1%)	<0.1%
1 mm	600 µm (<0.1%)	<0.1%
2 mm	600 µm (<0.1%)	<0.1%

Rayleigh length z_R44.0 mm

Depth of focus (2 z_R)88.1 mm

Half-angle divergence6.8 mrad

Beam NA (approx.)0.007

Long Rayleigh length. This focus is forgiving, but a complete ISO 11146 caustic would need ±88.1 mm of travel. Extended measurement ranges are available on request.

Fit check, waist centered in range
Check	FBP-1KF	FBP-2KF	FBP-3KF
Spot size in range	Yes	Yes	Yes
Beam NA within limit	Yes (0.05)	Yes (0.04)	Yes (0.04)
Range covers ±2 z_R (ISO 11146)	Range on request	Range on request	Range on request

If the focus drifts by
Focus shift	Spot diameter	Peak irradiance
0.1 mm	600 µm (<0.1%)	<0.1%
0.25 mm	600 µm (<0.1%)	<0.1%
0.5 mm	600 µm (<0.1%)	<0.1%
1 mm	600 µm (<0.1%)	−0.1%
2 mm	601 µm (+0.1%)	−0.2%

Illustrative values at 1070 nm for an ideal caustic with the waist centered in the measurement range; the shaded band is ±z_R and the dashed lines mark ±2 z_R. Bars below the plot show each model’s measurement range. RayCi Pro measures your real beam, including astigmatism.

FBP-1KF vs FBP-2KF vs FBP-3KF

FBP-1KF (400 W) FBP-2KF (1 kW) FBP-3KF (2 kW)

Max power, single-mode: 400 W
Max power, multi-mode: 700 W
Focused spot, single-mode: 75 µm to 1.2 mm (30 µm to 0.6 mm with 3X)
Focused spot, multi-mode: 300 µm to 1.2 mm (300 µm to 0.6 mm with 3X)
Measurement range: ±12 mm (other on request)
Max NA / divergence: 0.05 / 100 mrad
Angle of incidence: 0 to 1.5°
Waist position accuracy: ±100 µm
Waist size and M² accuracy: 2 to 4%
Sensor: 1.3 MP CMOS, 5.3 µm pixels, 40 Hz, 10-bit
Cooling and measurement time: Up to 20 s at 400 W without water cooling; unlimited with the water-cooled absorber (>2 l/min, 1 bar, 8 mm hose)
Dimensions / weight: 98 x 98 x 65 mm / ~2 kg
3X option: Available

FBP-1KF data sheet Request a quote

Max power, single-mode: 1,000 W
Max power, multi-mode: 1,200 W
Focused spot, single-mode: 75 µm to 1.2 mm (30 µm to 0.6 mm with 3X)
Focused spot, multi-mode: 300 µm to 1.2 mm (300 µm to 0.6 mm with 3X)
Measurement range: ±15 mm (other on request)
Max NA / divergence: 0.04 / 80 mrad
Angle of incidence: 0 to 1°
Waist position accuracy: ±100 µm
Waist size and M² accuracy: 2 to 4%
Sensor: 1.3 MP CMOS, 5.3 µm pixels, 30 Hz, 10-bit
Cooling and measurement time: Up to 20 s at 500 W without water cooling; unlimited with the water-cooled absorber (>4 l/min, 2 bar, 10 mm hose)
Dimensions / weight: 98 x 98 x 65 mm (98 x 98 x 132 mm with 3X option) / ~2.6 kg
3X option: Available

FBP-2KF data sheet Request a quote

Max power, single-mode: 2,000 W
Max power, multi-mode: 2,200 W
Focused spot, single-mode: 75 µm to 1.2 mm
Focused spot, multi-mode: 300 µm to 1.2 mm
Measurement range: ±24 mm (other on request)
Max NA / divergence: 0.04 / 80 mrad
Angle of incidence: 0 to 1°
Waist position accuracy: ±75 µm
Waist size and M² accuracy: 2 to 4%
Sensor: 1.3 MP CMOS, 5.3 µm pixels, 30 Hz, 10-bit
Cooling and measurement time: Unlimited measurement time with water cooling (>6 l/min, 3 bar)
Dimensions / weight: 98 x 98 x 159 mm / ~3.7 kg
3X option: Not available

FBP-3KF data sheet Request a quote

Focus Beam Profiler FAQ

What does a focus beam profiler measure?

A focus beam profiler images the focused laser spot at several planes along the beam axis and fits the caustic. The CINOGY FBP reports waist diameter, absolute waist position (z0), Rayleigh length, divergence and the M² beam quality factor, evaluated in RayCi Pro according to ISO 11146-1 and ISO 11146-2.

Which FBP model fits my laser powder bed fusion machine?

Match the model to your laser's maximum power and beam mode. The FBP-1KF is rated to 400 W single-mode and 700 W multi-mode, the FBP-2KF to 1 kW and 1.2 kW, and the FBP-3KF to 2 kW and 2.2 kW. For single-mode spots under 75 µm, choose the FBP-1KF or FBP-2KF with the 3X option.

Can the FBP measure the beam at full process power?

Yes. Each model measures at up to its rated power. With the water-cooled absorber connected, measurement time is unlimited. Without water cooling, the FBP-1KF measures for up to 20 s at 400 W and the FBP-2KF for up to 20 s at 500 W. The FBP-3KF is operated with water cooling.

How accurate is the FBP?

Measurement position accuracy is ±50 µm on all models. Waist position accuracy is ±100 µm on the FBP-1KF and FBP-2KF and ±75 µm on the FBP-3KF. Waist size and M² are accurate to 2 to 4%, and the optional power measurement to 5 to 7%.

What is the 3X option?

The 3X option magnifies the beam onto the sensor for a 2 µm effective pixel, extending single-mode measurement down to 30 µm spots (range 30 µm to 0.6 mm). It is available on the FBP-1KF and FBP-2KF, not on the FBP-3KF.

Which wavelengths does the FBP support?

The FBP is configured for 1064 nm, with 1030 nm and 1070 nm covering the fiber and disk lasers used in metal additive manufacturing. Other wavelengths are available on request.

How does the FBP connect and what software is included?

The FBP connects and draws power over USB 3.0 (USB 2.0 compatible) and ships with a RayCi Pro license for acquisition, caustic fitting and reporting.

Axiom Optics supplies and supports the CINOGY Focus Beam Profiler from offices in Cambridge, Massachusetts and Orsay, France. For more on beam measurement in metal printing, visit the laser additive manufacturing application page, or compare lab-oriented systems on the laser beam quality and M² measurement page.

Request a quote FBP user guide (PDF)

Sensor Data
Model	FBP-1KF (400W)	FBP-2KF (1KW)	FBP-3KF (2KW)
Spectral Response	1064nm (1030nm, 1070nm) Others on request	1064nm (1030nm, 1070nm) Others on request	1064nm (1030nm, 1070nm) Others on request
Pixel Size	5.3µm (2µm effective with 3x option)	5.3µm (2µm effective with 3x option)	5.3µm
Number of Pixels	1.3MPixel	1.3MPixel	1.3MPixel
Technology	CMOS (frame rate 40 Hz, exposure time 50µs-100µs	CMOS (frame rate 30 Hz, exposure time 50µs-100µs	CMOS (frame rate 30 Hz, exposure time 50µs-100µs
Data Output	10Bit	10Bit	10Bit
Interface	USB3.0 (USB2.0)	USB3.0 (USB2.0)	USB3.0 (USB2.0)

Features
Model	FBP-1KF (400W)	FBP-2KF (1kW)	FBP-3KF (2kW)
Focused Beam Size (Single-Mode)	75µm - 1.2mm (30µm - 0.6mm with 3X option)	75µm - 1.2mm (30µm - 0.6mm with 3X option)	75µm - 1.2mm
Focused Beam Size (Multi-Mode)	300µm - 1.2mm (300µm - 0.6mm with 3X option)	300µm - 1.2mm (300µm - 0.6mm with 3X option)	300µm - 1.2mm
Measurement Range	+/- 12mm (other on request)	+/- 15mm (other on request)	+/- 24mm (other on request)
Max NA / Divergence	0.05 / 100mrad	0.04 / 80mrad	0.04 / 80mrad
Angle of Incidence	0 - 1.5 degrees	0 - 1 degrees	0 - 1 degrees
Max Input Laser Power (Single-Mode)	400W	1000 W	2000 W
Max Input Laser Power (Multi-Mode)	700 W	1200 @	2200 W
Measurement Time	No Limitation (Up to 20s @400W without water cooling)	No limitation (Up to 20s @500W without water cooling)	No limitation with water cooling
System Aperture	Ø18mm (with AR-coated protection window)	Ø18mm (with AR-coated protection window)	Ø18mm (with AR-coated protection window)
Input for Clean Air Flushing	Ø6mm hose (Optional: Coupling plug (NW2,7) with valve for double-sided shut off)	Coupling plug (NW2,7) with valve for double-sided shut off	Coupling plug (NW2,7) with valve for double-sided shut off
Measurement Position Accuracy	+/- 50µm	+/- 50µm	+/- 50µm
Waist Position Accuracy	+/- 100µm	+/- 100µm	+/- 75µm
Waist Size Accuracy	2-4%	2-4%	2-4%
M2 Value Accuracy	2-4%	2-4%	2-4%
Power Measurement Accuracy (optional feature)	5-7%	5-7%	5-7%
Software	RayCi-Pro	RayCi-Pro	RayCi-Pro

Specifications
Model	FBP-1KF (400W)	FBP-2KF (1kW)	FBP-3KF (2kW)
Mechanical Dimensions	98mm x 98mm x 65mm	98mm x 98mm x 65mm (98mm x 98mm x 132mm when equipped with 3X option)	98mm x 98mm x 159mm
Weight	~2kg	~2.6kg	~3.7kg
Electrical Requirements	Power Supply via USB	Power Supply via USB	Power Supply via USB
Water Cooling	Water-cooled absorber, Tap or DI Water: >2l/min, 1bar, 25-25 Celsius, 8mmØ hose	Water-cooled absorber, Tap or DI Water: >4l/min, 2bar, 25-22 Celsius, 10mmØ hose	Water-cooled absorber, Tap or DI Water: >6l/min, 3bar, 25-22 Celsius
Dust Protection	Flushing with clean air, avoid contamination of optics	Flushing with clean air, avoid contamination of optics	Flushing with clean air, avoid contamination of optics
Storage Temperature	-10°C…+60°C	-10°C…+60°C	-10°C…+60°C
Operating Temperature	0°C…+40°C	0°C…+40°C	0°C…+40°C