Path: utzoo!utgpu!watserv1!watmath!att!cbnews!military From: lwch_cif@uhura.cc.rochester.edu (LE VENGEUR) Newsgroups: sci.military Subject: Re:Sub Communications Message-ID: <15580@cbnews.ATT.COM> Date: 14 Apr 90 04:11:21 GMT Sender: military@cbnews.ATT.COM Organization: University of Rochester Lines: 20 Approved: military@att.att.com From: lwch_cif@uhura.cc.rochester.edu (LE VENGEUR) In a couple of articles ago someone mentioned about the use of laser to communicate with the base on the surface. I believe the laser in question is a gas laser called Copper Vapor Laser. In its blue-green mode (wavelength of .5105 mus) it can travel easily through the salt water of the ocean. Its one of the most powerful gas laser there is requiring only 1 mirror for its stimulated emission and amplification. Approximately 40 watts in power and has a 15 kHz repetition rate. Thats all I learned so far in the Optics Undergrad. Prog. here in Rochester, please if possible follow up with the laser's actual role or its prospect in the submarine's submerged communication. Thanx Lea-Wei