Patent ID: 7469092
Filing Date: 2008-12-23
Classification: G01J,G01N,G02B

Abstract:
1. A diode laser spectroscopy gas sensing apparatus comprising: a diode laser having a select lasing frequency; a pitch optic optically coupled to the diode laser, the pitch optic being operatively associated with a process chamber and oriented to project laser light along a projection beam through the process chamber; a catch optic in optical communication with the pitch optic to receive the laser light projected through the process chamber; an optical fiber optically coupled to the catch optic; a catch side alignment mechanism operatively associated with the catch optic providing for the variable alignment of the catch optic with respect to the projection beam to maximize a quantity of laser light received by the catch optic from the pitch optic and coupled to the optical fiber; and a detector sensitive to the select lasing frequency optically coupled to the optical fiber.