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640 NX

640 NX

Single Frequency CW C-DPSS Laser

The Skylark 640 laser delivers unrivalled continuous wave single frequency performance at market-leading output powers from a small footprint — making it suitable for integration with existing systems and a wide range of applications. The 640 NX provides outstanding beam characteristics, high output stability, long coherence, extremely low noise, and a versatile software package.

  • 640 nm

    up to 1,500 mW

    ≤ 0.5 MHz

    Spatial mode

    CW, SLM

    Operational mode


    Spectral bandwidth

    Output power (fixed value within range)


  • < 200 W

    Power consumption

    5 - 30 mins

    Warm up time

    ± 0.2 pm

    ≤ 1.0 % Peak to Peak

    ≤ 0.1 % RMS

    Output power noise (10 Hz - 10 MHz)

    Output power stability (over 8 hours)

    Spectral stability (over 8 hours)

  • ≥ 100:1, vertical

    Polarisation ratio

    65 mm

    0.8 - 1.2 mm

    1.0 mrad, diffraction limited

    Beam pointing stability

    > 100 m

    Coherence length

    ≤ 5 µrad/°C

    Beam divergence

    Beam diameter at output aperture

    Beam height

  • 210 x 100 mm

    238 x 170 x 54 mm

    Controller L x W x H

    Laser head L x W

  • 18 - 30 °C

    ± 1.5 °C

    0 - 50 °C


    5 - 95 %, non-condensing


    Laser interface stability

    Ambient temperature range

  • Closed-loop water chiller

    Enhanced intensity stability through compact, closed-loop cooling. Enables portability of the laser system without dependence on a water mains connection.

    Fan-assisted heatsink

    Compact, low-cost system cooling which is integrated into the laser platform. Intelligently controlled to maintain stable wavelength output and intensity.

    Fiber coupling

    External fiber coupling options available to achieve easier integration. Multimode fibers typically achieve > 95% efficiency, for single-mode fibers it is > 70%.

    Software power control

    Flexible and easy output power adjustment to conserve system lifetime.

    External power modulation

    AOM configuration to achieve up to 200 kHz modulation on the output intensity.

Contact us to discuss your laser requirements

Looking for pricing? Get in touch for a product quote

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