Duetto 349 UV Series Laser

Single Frequency CW UV

The Duetto 349 UV Series offers unrivalled CW single frequency operation within the UV range, offering 50 mW power with outstanding beam characteristics, high output stability, extremely low noise, small footprint, and versatile software package – making it suitable for a wide range of applications and system integrations.

Key Features

Narrow Linewidth

≤ 0.5 MHz

High Power Stability

≤ 2.0 %

High Spectral Stability

± 1.0 pm

Designed for


Integration Features

USB Connectivity
Software Control
Combined Heatsink
Remote Diagnostics


Output Power (fixed value within range)

50 mW


349 nm

Spectral Bandwidth

≤ 0.5 MHz

Spatial Mode


Spectral Stability (over 8 hours)

± 1.0 pm

Coherence Length

> 100 m

Output Power Stability (over 8 hours)

≤ 2.0 %

Output Power Noise (10 Hz - 10 MHz)

≤ 0.1 % RMS

Beam Divergence

≤ 2.5 mrad, diffraction limited

Beam Diameter at Output Aperture

0.6 - 1.2 mm

Beam Pointing Stability

≤ 5 µrad/°C

Laser Head Dimensions


225 x 110 mm

Beam Height

75 mm

Environmental Conditions

Ambient Temperature Range

18 - 30 °C

Laser Head Interface Stability

± 1.5 °C


0 - 50 °C


5 - 95 %, non-condensing


Raman Spectroscopy, Brillouin Scattering, Flow Cytometry, Optical Manipulation, Interferometry, Semiconductors, Wafer Fabrication, Lithography, Confocal Microscopy, Biomedical/Bioengineering, Fluorescence, Disc Mastering, Optical Grating Mastering, High Precision Optics, and more.

Optional Extras

  • Water Cooling

    For specialised applications that demand minimal perturbance and vibration, we offer a water cooling solution  utilising a high performance thermo-electric chiller. Should your cooling needs change in the future, the water cooling loop can simply be disconnected from the pedestal and the laser head may be cooled passively.

    This option replaces our standard passive cooling pedestal. 

  • Versatile Software Control

    If you require greater control and monitoring of your laser's parameters, consider our PC control interface. Depending on your requirements, users are able to turn the connected laser on and off, refine output power and monitor performance.

  • Remote Diagnostic Support

    We also offer a remote diagnostics option so our laser engineers can monitor the performance of your laser and make necessary adjustments, without the need for a call-out.

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UniKLasers Ltd.

Ratho Park Phase One, 88 Glasgow Rd
Ratho Station, Edinburgh
EH28 8PP

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