Method and device for producing individual short laser pulses

Details Method and device for producing individual short laser pulses Method and device for producing individual short laser pulses

1984-05-04

1987-02-03

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Control of pulse characteristics

372 97, 372 96, 372 93, 372 54, 372 69, H01S 310

Patent

active

046413120

ABSTRACT:
A method of producing individual short laser pulses in which a stimulatable laser medium is excited by a pump pulse in order to produce a population inversion above a laser threshold value, the population inversion being kept below the threshold value after emission of the short radiation pulse. The laser medium is common to two resonators and from it energy in the form of the desired individual short laser radiation pulse is first taken from the first resonator by means of a first relaxation process of given threshold value, relatively short time constant and relatively low quality factor, after which the inversion in the laser medium is kept below the preset threshold value of the first resonance process by a second relaxation process of relatively long time constant and relatively high quality factor in the second resonator coupled to the first. The resulting individual short laser radiation pulse can be supplied as pump pulse to a distributed feedback dye (DFB) laser at an intensity relative to the DFB laser medium threshold such that the DFB laser emits at least one ultra-short radiation pulse.

REFERENCES:
patent: 3675157 (1972-07-01), Kaminow et al.
patent: 3786368 (1974-01-01), Bjorkholm et al.
patent: 3969684 (1976-07-01), de Witte et al.
patent: 4268801 (1981-04-01), Stappaerts
patent: 4479220 (1984-10-01), Bor et al.
Shank et al., "Tunable Distributed-Feedback Laser", Appl. Opt. Lett., vol. 8, No. 9, 1 May 1971.

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