Volume holographic grating

Overview

Ondax's powerlocker Wavelength stabilized grating is a volume holographic grating (VHG) that "locks" the emission wavelength of laser diode to the narrow spectrum of the selected wavelength. Provides highly stable optical properties over an extended temperature range. PowerLockers Usually, the spectral output of laser is reduced by one order of magnitude. PowerLocker The design makes the short external cavity configuration provide better mode selection than the system based on Littrow or Littman cavity. All ondax vhgs are bulk "solid-state" diffraction holographic filters that, unlike thin films or gel, provide ultra stable, non degradable performance over the filter's life. With very tight wavelength, efficiency, bandwidth and diffraction angle control, ondax VHG can be accurately and repeatedly designed to meet the most demanding spectral and service time requirements.