SureLock Wavelength Stabilized Lasers

All SureLock™ Wavelength Stabilized Laser Diodes and Laser Modules incorporate the Coherent PowerLocker® VHG filter to provide single-frequency or narrowed linewidth spectral performance, stabilized temperature operating characteristics, and low power consumption – delivering affordable, portable, instrument quality performance for a diversity of applications.

SureLock lasers deliver superior optical stability and low power consumption – enabling affordable, portable, instrument-quality performance for a diversity of applications. They are available in a wide range of wavelengths, power levels, and form factors. Coherent can also custom-configure a wavelength-stabilized solution to meet your exact application requirements.

The VHG filter is a miniature ultra-narrowband Volume Holographic Grating (also known as a VBG), which creates an external cavity that locks the diode laser wavelength into a narrowed optical spectrum. This increases spectral brightness and delivers stabilized optical performance over extended temperature ranges, transforming standard diode lasers into single-frequency or spectrum-narrowed, instrument-quality lasers. The extremely short external cavity configuration results in better mode selection and a smaller footprint than Littrow or Littman cavity designs, while reducing the spectral bandwidth of a typical laser by an order of magnitude.


  • TO Series TO Cans
  • CP Series Collimated TO Cans
  • BF Series Butterfly
  • Butterfly OEM Laser Module


  • RO Series Round Laser Modules
  • LM Series Compact Laser Modules
  • LMFC Series Fiber Coupled Compact Laser Modules
  • BT series Mini-Benchtop Modules



Optical Metrology
Raman Spectroscopy
Solid State Pumping
Fiber Laser Pumping
Analytical Instrumentation

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