Wavelength-locking external laser cavity
Ondax

Ondax's PowerLocker® wavelength stabilization gratings are volume holographic gratings (VHGs) that "lock" a laser diode's emission wavelength into a narrowed optical spectrum. This increases the spectral brightness and delivers highly stablized optical performance over extended temperature ranges. PowerLockers® typically reduce the spectral output of a laser by an order of magnitude. The short external cavity configurations enabled by the PowerLocker® design deliver better mode selection than systems based on Littrow or Littman cavities, at a fraction of the size and cost.

All Ondax VHGs are bulk "solid-state" diffractive holographic filters, which unlike thin films or gels, can deliver ultra-stable, degradation free performance for the lifetime of the filter. Capable of very tight wavelength, efficiency, bandwidth, and diffraction angle control, Ondax VHGs can be precisely and reproducibly engineered to meet even the most demanding spectral and temporal specifications.

Proprietary materials, manufacturing and test processes ensure consistent, repeatable performance from every single filter, every time, guaranteed.