Ultrashort optical pulse amplifiers incorporating a gain medium

Details Ultrashort optical pulse amplifiers incorporating a gain medium Ultrashort optical pulse amplifiers incorporating a gain medium

1996-12-20

1998-10-06

Hellner, Mark

Optical: systems and elements

Optical amplifier

Correction of deleterious effects

359333, 372 36, H01S 300, H01S 304

Patent

active

058186280

ABSTRACT:
An ultrashort optical pulse amplifier that incorporates a gain medium preferentially cooled along a crystalline axis for partially ameliorating the thermally induced distortions and losses created by cylindrically symmetric cooled designs. The ultrashort pulse amplifier can be pumped with higher pump powers without degradation of the output spatial mode structure and the overall efficiency of extraction of energy from the gain medium is improved. The gain medium preferably has a rectangular cross section and cooling means are provided in thermal contact with only selected opposing surfaces of the gain medium so that thermal gradients lie approximately along a crystalline axis to reduce thermally-induced birefringence.

REFERENCES:
patent: 3487332 (1969-12-01), Cordy, Jr.
patent: 4429394 (1984-01-01), Guch, Jr.
patent: 4949346 (1990-08-01), Kuper et al.
patent: 5572358 (1996-11-01), Gabl et al.

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