Lambda Beam Series | Compact High-Performance CW Laser | 375 - 1550 nm - Image 2

Lambda Beam Series | Compact High-Performance CW Laser | 375 – 1550 nm

Available Wavelengths

375nm - 1064nm

Output Power

Up to 1W

Modulation

Up to 1.5MHz

Polarization

Linear

Power Stability

<1% (10h)

Fiber Coupling

Optional

European Availability

Available at Axiom Optics Europe

Tag: LASERS: CW Brand: RGB Lasers

Available Wavelengths
Lambda Beam	375nm, 395nm, 405nm, 415nm, 420nm, 422nm, 425nm, 430nm, 435nm, 440nm, 445nm, 450nm, 455nm, 460nm, 465nm, 470nm, 473nm, 488nm, 505nm, 510nm, 515nm, 520nm, 532nm, 633nm, 635nm, 638nm, 642nm, 650nm, 660nm, 670nm, 675nm, 685nm, 690nm, 705nm, 730nm, 760nm, 780nm, 785nm, 805nm, 808nm, 820nm, 825nm, 830nm, 840nm, 852nm, 880nm, 905nm, 915nm, 940nm, 980nm, 1064nm, 1085nm, 1550nm. For a complete list of wavelengths and available powers, look at the Lambda Beam Datasheet under the Downloads Tab.
Lambda Beam Wavelock	405nm, 633nm, 638nm, 640nm, 658nm, 685nm, 785nm, 808nm, 852nm, 976nm. For a complete list of wavelengths and available powers, look at the Lambda Beam Wavelock Datasheet under the Downloads Tab.

Beam Specifications
	Diode lasers	DPSS lasers
Beam diameter	1.1 x 2.2 to 1.2 x 4.3 mm	Round beam 1.2 mm
Divergence	< 1.2 mrad	< 1.2 mrad
Beam mode	TEM00 (except multi-mode lasers)	TEM00 (except multi-mode lasers)
Polarization	Linear, > 100:1	Linear, >10:1
Beam alignment	< 5 mrad and < 0.1 mm (compared to base mount)	< 5 mrad and < 0.1 mm (compared to base mount)
Pointing stability	< 5 µrad/K	< 5 µrad/K
Noise	< 2 % RMS	< 2 % RMS
Power stability	< 1 % (10h)	< 3 % (8h)
Temp. accuracy	< 10 mK	< 10 mK
Warm-up time	Ready for use after 5s, calibrated operation after 5 min	Ready for use after 5s, calibrated operation after 5 min
Drive mode	Active current control	Active power control
Modulation	Adjustable constant power; analog or digital external modulation up to 1.5 MHz	Constant nominal power; switchable up to 1 kHz*³
Control modes	Power, temperature and modulation mode via USB, optical remote control available	Power and modulation mode via USB

General specifications
CDHR classification	3b, 4 (for laser output > 500 mW
Dimensions	63.5 x 31.0 x 32.5 mm (technical drawing available on our website
Weight	94 g (laser head)
Operating temp	0 °C to 45 °C (non condensing)
Storage temp	-25 °C to 70 °C

CW Laser Applications

Confocal Microscopy

confocal microscopy with RGB laser diagram

Confocal microscopy is a sophisticated optical imaging technique that creates highly detailed images of samples. This technique employs laser beams for point illumination, directed through an excitation pinhole to then pass through various lenses within the microscope’s optical path to be focused onto a single point of the sample.

Upon excitation, fluorescence emitted from the sample travels back through lenses to a detector. Since a pinhole is placed in front of the detector, only light from the focal point at the sample is imaged, rejecting out-of-focus light, and thus imaging very sharp sections of the sample at a time. By scanning the laser across the sample, complete images can be reconstructed from numerous individual measurements. This process results in high-resolution, detailed visualization of structures like cells or tissues.

Dynamic Light Scattering (DLS) / Photon Correlation Spectroscopy

Dynamic Light Scattering (DLS) / Photocorrelation Spectroscopy diagram using RGB cw laser

Dynamic Light Scattering (also known as Photon Correlation Spectroscopy) is a technique used to determine size of particles in a solution. When coherent and monochromatic laser light illuminates particles (such as proteins), it scatters in all directions. An interferometer is then employed to measure the distances between the scattering centers (i.e., the particles). Because particles in a fluid are in constant Brownian motion, their distances continually change, leading to interference patterns and fluctuations in scattering intensity. By analyzing these fluctuations, the speed of the particles and their diffusion coefficient can be determined. The autocorrelation function, derived from these measurements, allows for the calculation of particle parameters, which in turn enables the determination of the particle’s hydrodynamic radius (size) using the Stokes-Einstein equation. These results can indirectly provide information about the molar mass of the measured particles. This technique is widely used in protein analysis.

Michelson Interferometer

Michelson Interferometer diagram

The Michelson interferometer, named after physicist Albert A. Michelson, leverages the phenomenon of interference, which is observable with coherent light sources like lasers. Its fundamental design involves splitting a single light wave into two distinct parts. These two waves then travel along different paths, resulting in different propagation times. When they recombine after being reflected by mirrors, interference occurs. By altering the optical path length of one of the waves—for example, by moving one of the mirrors—the phases of the two waves shift relative to each other, thereby changing the interference pattern. Measuring the intensity of the resulting wave allows for the detection of even minute changes in the path difference between the two waves. A practical application of this precision is in measuring the thermal expansion of materials, where even the slightest expansion can be accurately detected.

Flow Cytometry

Flow Cyometry diagram

Flow cytometry is a powerful analytical method for the qualitative and quantitative assessment of cells. In this process, cells are rapidly drawn into a flow system, with over 1000 cells per second individually passing through a path illuminated by a laser beam. Depending on their unique characteristics, these cells emit fluorescence. Different fluorescence wavelengths (e.g., red, yellow, green, blue) can yield various types of information.

A forward scatter detector can be used to measure light diffraction, providing data on the cell’s volume. A side scatter detector, which measures light refraction at right angles, helps determine cell size, the structure of the cell nucleus, the number of vesicles, and cellular granularity. Specialized Fluorescence-activated Cell Sorting (FACS) devices can then separate cells based on these characteristics. An example application of flow cytometry is the separation of sperm cells carrying X or Y chromosomes to influence the sex of an embryo in in vitro fertilization.

Advancements in Raman Spectroscopy

Raman Spectroscopy Diagram

Historically, highly sensitive analyses using Raman spectroscopy often relied on costly and sometimes unreliable methods like Surface-Enhanced Raman Scattering (SERS). However, a recent breakthrough by a materials science research team has led to the development of a method promising a 50-fold increase in performance.

Raman measurements fundamentally involve a laser interacting with a sample placed on a specialized substrate. The research team’s innovation lies in a novel substrate composed of various materials with synergistic properties. This substrate incorporates four plasmonic nanostructures, including gold and silver particles, which generate a strong light-matter interaction known as plasmonic effects. When combined with a photocatalytic titanium-oxide layer, a photocatalytic effect is introduced, intensifying the Raman signal by a factor of 50. This advancement significantly enhances the precision and speed of sample analysis. A notable feature of this substrate is its reusability; it can be cleaned with UV light and used up to 20 times, leading to substantial cost reductions.

Energy Transfer Upconversion (ETU)

energy transfer upconversion

Energy Transfer Upconversion (ETU) is a physical phenomenon where a laser-active ion is excited to an energy level higher than what would be achieved by simple absorption of a single pump photon. The additional energy required for this upconversion is transferred from another laser-active ion.

The Institute of Chemistry at the University of Basel, for instance, utilizes a customized Lambda Beam laser system for ETU studies. Through a specific lens arrangement, this laser can achieve a very high power density despite having an output power of only 40mW, making it particularly suitable for upconversion research.

Molography

Molography diagram

Molography, specifically focal molography, is a nanotechnology-based technique that ingeniously integrates photolithography, molecular self-assembly, and cutting-edge optical technology.

In this process, a 785nm RGB laser light wave interacts with antibodies. A portion of the light is diffracted (redirected) at a specific angle, which is determined by the spacing of the antibody lines. A patented biosensor developed by lino Biotech AG evaluates the resulting light pattern. This technology finds applications in various fields, including quality control for cell and gene therapies, drug screening in living cells, and point-of-care diagnostics in healthcare.

Datasheet

Lambda Beam Laser Datasheet

Lambda Beam Laser Wavelock Datasheet

Axiom Optics Blogs

Ltune Laser Control Software

The Lambda Beam uses a USB interface for remote control. The laser can be controlled either via the Ltune Windows application (included) or with the user’s custom software via serial communication.

The Ltune software for Windows can be used to configure and control the laser. The software features:
• Modulation mode selection
• Output power adjustment
• Display of the laser status, configuration and operating hours
• Temperature display and adjustment

LTune Software

Available Options and Accessories:

Opto-mechanical shutter
Diode wavelength selection
Water cooling base plate
Heatsink labor kit
Cooling ice kit
RS-232 interface
Fiber coupler
Fibers

Lambda Beam technical drawing

Lambda Beam Technical Drawing

Lambda Beam Series | Compact High-Performance CW Laser | 375 – 1550 nm

Lambda Beam CW Laser: A Compact, High-Performance Modulatable Laser

Key Features

Lambda Beam wavelength and power finder

Laser Control Options

Power Controller or PowerBox?

Choose the Power Controller

Choose the PowerBox

Choose the PowerBox

Choose the PowerBox

Lambda Beam Wavelock: Highly Stabilized CW Laser for Raman Spectroscopy

Convenient Optional Fiber Coupling

Beam size and irradiance at distance

Lambda Beam Key Specifications

Lambda Beam FAQ

Configure your Lambda Beam