Duetto-349 UV: 349nm Single Frequency CW UV Laser

Get Quote Questions?


Wavelength (nm)

Output power (W)




Overview of Duetto-349 UV: 349nm CW Single Frequency UV Laser

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.

Duetto-349 UV Specifications

   •  Output Power (fixed value within range):   50 mW

   •  Wavelength:   349 nm

   •  Spectral Bandwidth:   ≤ 0.5 MHz (no external ref.)

   •  Spatial Mode:   TEM00

   •  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


Duetto-349 UV Features

   •  Narrow Linewidth:   ≤ 0.5 MHz

   •  High Power Stability:   ≤ 2.0 %

   •  High Spectral Stability:   ± 1.0 pm

   •  Excellent Beam Quality

Integration Features

   •  USB Connectivity

   •  Software Control

   •  Combined Heatsink

   •  Remote Diagnostics

Environmental Conditions

   •  Ambient Temperature Range:   18 – 30 °C

   •  Laser Head Interface Stability:   ± 1.5 °C

   •  Storage:   0 – 50 °C

   •  Humidity:   5 – 95 %, non-condensing

Duetto-349 UV Laser Head Dimensions

   •  L x W x H:   222mm x 110mm x 105mm

   •  Beam Height:   75mm




Our engineering platform utilizes the spectrum discriminatory feature of a Michelson interferometer setup within a spectral range preselected by a VBG. This suppresses all but one lasing longitudinal mode within the laser cavity. Due to significantly lower power consumption and simplified thermal management, BRaMMS-based lasers provide improved output power scalability from a remarkably small footprint.

Duetto-349 UV Optional Extras

Water Cooling

For specialized applications that demand minimal perturbance and vibration, we offer a water-cooling solution utilizing 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 can 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.