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Digital U-Type (Multi-Mode)

The multi-mode "U-Type" module offers high output power, narrow spectral bandwidth, and fiber coupling. The laser’s stabilized peak wavelength remains “locked” regardless of case temperature (15 to 45 ºC). The laser is integrated into a compact package with high-performance laser drive and temperature control electronics. 

Designed to replace expensive DFB, DBR, fiber, and external cavity lasers, the multimode Spectrum Stabilized Laser offers superior wavelength stability over time, temperature, and vibration; and is manufactured to meet the most demanding wavelength requirements. 

Devices can be spectrally tailored to suit application needs and offer side mode suppression ratios (SMSR) better than 40dB, providing extremely high signal-to-noise ratio and making these sources ideal for Raman spectroscopy.

Choose a λ (nm)
Choose a Min. Power (mW)
Choose a connector type

Key Features

  • High Power Fiber Coupled Output (Up to 1.2W)
  • Digital and Analog IO Options: USB/I2C standard, RS232 available
  • Ultra-Narrow Spectral Bandwidth (<0.1 nm FWHM)
  • “Ultra-track” Linear Tracking Photodiode
  • 40dB SMSR Typical
  • Compact by design: 3” x 2.5” x 0.69” Package Weight < 4 oz.
  • Comes standard with 105 um core fiber; 50 and 62.5 um core fiber upon request

Custom Capabilities

  • Custom wavelengths available upon request
  • FC/PC or SMA output coupler
  • Various diameter output fibers available
  • External TEC (e.g. No TEC inside of package optional)


Wavelength Tolerance

+/- 0.5 nm

Narrow Linewidth Spectral Linewidth

<0.1nm (0.8nm typical)

Wavelength Stability Range

15°C to 45°C

Output Power Stability

<1% at constant Tcase (sample rate of 1 per 1 second)

Modulation Rate

Digital Modulation: 25kHz External Modulation: CW to 10kHz at 50% duty cycle or CW to 1kHz at 10% – 100% duty cycle. 

Warm-Up Time

10 Seconds from cold start

1.5 Seconds from warm start


This laser package is designed for OEM Integration and is ideal for:

  • High Resolution Raman Spectroscopy
    • Portable Raman
    • Process Raman 
  • Direct-diode Frequency Doubling 
  • Fiber Laser Seeding 
  • Remote Sensing 
  • Fiber Laser Pumping