Skylark 349 | Single Frequency CW DPSS UV Laser
Wavelength
349 nm
Output Power
Up to 400 mW
Spectral Bandwidth
≤ 500 kHz
Spatial Mode
TEM₀₀
Operational Mode
CW, SLM
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Tag: LASERS: CW
Brand: Skylark Lasers Limited
Skylark 349: Single-Frequency CW DPSS UV Laser
The Skylark 349 is a single-frequency CW DPSS UV laser designed to provide high-power ultraviolet light with spectral purity for demanding applications. It delivers up to 400 mW of ultra-stable output at a fixed wavelength of 349 nm. Engineered for consistent long-term performance, this laser is suitable for a wide range of uses in manufacturing, inspection, and analytics.
Key Features
- Ultra-Stable Wavelength: This laser provides light at a fixed wavelength of 349 nm, which is crucial for applications requiring precise spectral resolution and stability.
- Ultra-Stable Output Power: The output power is exceptionally stable, ensuring reliable and consistent results for processes that run for extended periods.
- Ultra-Low Power Noise: With minimal power noise, the Skylark 349 ensures high clarity measurements by minimizing signal distortion.
- Ultra-Narrow Linewidth: An ultra-narrow linewidth of ≤ 500 kHz gives the laser high spectral purity. This allows for fine detail and accuracy, making it ideal for precision tasks.
Blogs
| Output Beam Parameters | |
|---|---|
| Output Power | up to 400 mW |
| Wavelength | 349 nm |
| Spectral Bandwidth | ≤ 500 kHz |
| Spatial Mode | TEM₀₀ |
| Spectral Stability (over 8 hours) | ± 0.2 pm |
| Coherence Length | > 100 m |
| Output Power Stability (over 8 hours) | ≤ 2.0 % Peak to Peak |
| Output Power Noise (10 Hz-10MHz) | ≤ 0.3% RMS |
| Beam Divergence | 1.0 mrad, diffraction limited |
| Beam Diameter at Output Aperture | 1.0 - 1.5 mm |
| Beam Pointing Stability | ≤ 5 μrad/°C |
| Environmental Conditions | |
|---|---|
| Ambient Temperature Range | 18 - 30 °C |
| Laser Head Interface Stability | ± 1.5 °C |
| Storage | 0 - 50 °C |
| Humidity | 0 - 50 %, non-condensing |
| Dimensions | |
|---|---|
| Laser Head (L x W x H) | 425 x 200 x 123 mm |
| Beam Height | 90.0 mm |
Applications
- UV Raman spectroscopy
- Semiconductor defect detection
- Wafer inspection
- Wide band gap materials characterization
- 2D materials
- Laser interference lithography
- Diffraction grating fabrication
- Optical grating mastering
- Laser interferometry
- Photoluminescence (PL)
Thermal Management Options
- Closed-loop water chiller: By integrating a compact, closed-loop cooling system, the laser’s intensity stability is significantly improved. This design also makes the laser system portable, as it does not need to be connected to an external water source.
- Fan-assisted heatsink: This compact and economical laser cooling system is fully integrated into the laser platform. It uses intelligent controls to actively maintain a stable wavelength and intensity output.

