Controlled slow Q-switch

Details Controlled slow Q-switch Controlled slow Q-switch

1984-12-10

1986-12-16

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Q-switch

372 25, 372 20, 372 26, 372 18, H01S 3117

Patent

active

046302751

ABSTRACT:
By applying to a laser Q-switch a staircase-shaped control signal, a plurality of laser pulses are emitted with controlled energy and time separation. Compared with conventional Q-switching, the invention enables the laser to emit pulses with shorter time intervals, narrower linewidths, higher output energy, and more uniform power density across the laser beam cross section. The apparatus and method are particularly well-suited for use with low-gain lasers, such as alexandrite.

REFERENCES:
patent: 3500233 (1970-03-01), Doyle et al.
patent: 3622912 (1971-11-01), Doyle et al.
patent: 3896397 (1975-07-01), de Wit et al.
patent: 3936769 (1986-02-01), de Wit et al.
patent: 4308506 (1981-12-01), Ellis
patent: 4375684 (1983-03-01), Everett
patent: 4509829 (1985-04-01), Peterson
"The Output Characteristics of a Slowly Q-Switched Neodymium in Calcium Tungstate Laser" J. Phys. D., 1968, Ser. 2, vol. 1, pp. 1849-1851.
"The Theory of Q-Switching Applied to Slow Switching and Pulse Shaping for Solid State Lasers" J. Phys. D., 1968, Ser. 2, vol. 1, pp. 1125-1133.
Solid-State Laser Engineering, Walter Koechner, 1976, pp. 402-404.

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