Profile: OptiGrate designs and manufactures a full range of volume bragg gratings (transmitting - TBG, reflecting - RBG, chirped - CBG) in inorganic photosensitive silicate glass. Our product line includes reflecting (RBG) BragGrate™ mirror, bragGrate™ notch filter, BragGrate™ combiner and BragGrate™ bandpass filter. Our BragGrate™ deflector and BragGrate™ combiner. Our BragGrate™ mirror is a reflecting volume Bragg grating (RBG) recorded in a bulk of photosensitive silicate glass. BragGrate™ mirror placed in a laser resonator enables spectral and thermal management of the laser radiation and can withstand high optical densities up to 5 J/cm2. The laser modal structure is controlled by the longitudinal mode selection with the bandwidth down to 20 pm and the customized central wavelengths with accuracy of 0.1-0.5 nm. The BragGrate™ mirrors have record low absorption and allow thermal laser wavelength shift reduction to 0.005 nm/K.