CO.sub.2 TEA laser utilizing an intra-cavity prism Q-switch

Details CO.sub.2 TEA laser utilizing an intra-cavity prism Q-switch CO.sub.2 TEA laser utilizing an intra-cavity prism Q-switch

1984-08-02

1987-04-21

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Q-switch

372 24, 372107, 372 99, 372 20, 372100, 372101, H01S 3125

Patent

active

046602046

ABSTRACT:
A CO.sub.2 TEA laser utilizing an intra-cavity rotating prism Q-switch (70) for angularly switching the resonator gain by periodically causing the resonator mirrors (54, 56) to be in alignment. An opto-electronic timing device (79), which includes a graded index glass rod (76) rotating with the Q-switch prism, generates a pulse to initiate the laser discharge at the proper time before the mirrors are aligned so that the laser output pulse occurs when peak gain is achieved. The Q-switch speed of rotation is chosen such that the time interval in which the mirrors are aligned is not long enough to support the tail portion of the pulse typical of the gain switched CO.sub.2 TEA laser.

REFERENCES:
patent: 3548337 (1970-12-01), Gates et al.
patent: 3711788 (1973-01-01), Forkner
patent: 3725817 (1973-04-01), Nolan
Snowball; "Electronic Control of Flash-Tube Firing Time in a Spinning-Prism Q-Switched Laser", Electronic Eng., p. 120, Mar. 1968.

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