LIGHT SOURCE MODULE HAVING HARMONIC GENERATING CRYSTAL

摘要

A light source module (120, 200, 500) includes a laser (220, 520) configured to generate infrared light, and a harmonic generating crystal (230, 540) is in optical communication with the laser (220, 520). According to one exemplary embodiment, the harmonic generating crystal (230, 540) has a periodicity selected to provide a maximum output at an initial temperature. An actuator (240, 510) is coupled to the harmonic generating crystal (230, 540) and is configured to apply a restoring force to the harmonic generating crystal (230, 540) to maintain said periodicity over a temperature range.