Patent ID: 6953487
Filing Date: 2005-10-11
Classification: G01N,G02B,Y10T

Abstract:
1. A method for manufacturing a metallic gas cell comprising the steps of: (a) providing a metallic casing having an input open end and an output open end, and a opening located therebetween; (b) sealing a metallic filling tube to said opening at a predetermined temperature T2 that is higher than a predetermined temperature T1; (c) disposing each of an input and an output optical modules inside said casing proximate the corresponding open end thereof; (d) heating at the predetermined temperature T1 said ends of said casing for sealing said optical modules to the casing, thereby defining a cavity in said casing; (e) creating a substantial vacuum inside said cavity; (f) filling said cavity with an optical energy absorbent gas with said opening; and (g) sealing said opening.