Browse Prior Art Database

Alternating Current He Ne Gas Panel Laser

IP.com Disclosure Number: IPCOM000084906D
Original Publication Date: 1976-Jan-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Horstmann, RE: AUTHOR

Abstract

A laser structure has been devised, using flat glass panels as the housing for the helium-neon gas that will lase, that is capable of alternating current operation.

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Alternating Current He Ne Gas Panel Laser

A laser structure has been devised, using flat glass panels as the housing for the helium-neon gas that will lase, that is capable of alternating current operation.

Fig. 1 is a side view of the He-Ne gas panel laser and Fig. 2 is a top view of the fabricated laser. Two similar flat glass plates 2 and 4 are placed in intimate contact with each other, with apertures 6 cut through the plates to accommodate a helium-neon mixture of gas that is housed in chambers 8 and 10. On the inside surface of each plate 12 and 14, respectively, of each closed chamber 8 and 10, is deposited a metal layer 16 (see Fig. 2) of aluminum, or the like, as well as its connecting electrodes 18 to which is applied an electric potential. Such metal layers 16 serve as cold cathodes.

Cut into one of the plates 2 or 4 is a channel 20 which contains the lasing gas and such channel is along the optical axis of two facing mirrors 22 and 24. Alternating current is sent to these cold cathodes 16 by the electrical circuit shown in Fig. 3. A 110 volt, 60 cycle, source is sent through a step-up transformer that steps up the voltage to approximately 5005 volts, which voltage is applied, alternately, to the cathodes 16 via 2X10/5/ ohm resistors 26.

The cathode 16 of a discharge device of the kind described herein to achieve lasing serves as a source of electrons when the metal surface is bombarded with ions. Each electrode alternately serves as a cathode dependin...