Intracavity Raman cell resonator

Details Intracavity Raman cell resonator Intracavity Raman cell resonator

1989-02-06

1990-06-12

Lee, John D.

Coherent light generators

Raman laser

372 97, 307426, H01S 330

Patent

active

049339435

ABSTRACT:
A cavity which is resonant at a laser pumping frequency is defined by a reflective surface (92) and a mirror (110). A Raman medium (106) is contained within the cavity, as is a laser (90). A Q-switch (94), when not spoiling the Q of the cavity, allows photon density to increase within the cavity. When the Raman threshold of the Raman medium is exceeded, the Raman medium absorbs and then radiates photons. The radiated photons are at longer wavelength than the laser photons, and also occur in very short (less than ten nanoseconds) pulses. The radiated photons are reflected by a mirror (101) and exit the cavity through one of the reflectors defining the cavity (mirror 110). The invention shifts the wavelength and shortens the pulse duration of pulses produced by the laser (90).

REFERENCES:
patent: 3668420 (1972-06-01), Vanderslice
patent: 4048516 (1977-09-01), Ammann
patent: 4327337 (1982-04-01), Liu
patent: 4751714 (1988-06-01), Chen

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