Harmonic partitioning of a passively mode-locked laser

Details Harmonic partitioning of a passively mode-locked laser Harmonic partitioning of a passively mode-locked laser

1993-08-03

1995-05-09

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Mode locking

372 6, 372 9, 372 20, 372 69, 372 92, 372 25, H01S 3098

Patent

active

054147255

ABSTRACT:
The present invention is directed to providing a passively mode-locked laser which can achieve higher-harmonic mode-locking to produce a pulse repetition rate comparable to that of known actively mode-locked lasers, without requiring the complex modulation schemes typically associated with active techniques. Exemplary embodiments of the present invention are directed to a passively mode-locked laser wherein mode-locking is achieved by harmonic partitioning of the laser cavity. In accordance with the present invention, relatively high repetition rates can be achieved to provide ultra-short pulses without requiring the complex modulation schemes of active techniques, and without becoming susceptible to instabilities typically associated with passive techniques wherein high repetition rates are achieved using subcavities.

REFERENCES:
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patent: 5212711 (1993-05-01), Harvey et al.
patent: 5274659 (1993-12-01), Harvey et al.
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"Passive mode locking in erbium fiber lasers with negative group delay", M. E. Fermann et al., Appl. Phys. Lett. 62(9), Mar. 1, 1993, pp. 910-912.
"Laser diode-pumped femtosecond erbium-doped fiber laser with a sub-ring cavity for repetition rate control", E. Yoshida et al., Appl. Phys. Lett. 60(8), Feb. 24, 1992, pp. 932-934.
"Solid-state low-loss intracavity saturable absorber for Nd:YLF lasers: an antiresonant semiconductor Fabry-Perot saturable absorber", U. Keller et al., Optics Letters, vol. 17, No. 7, Apr. 1, 1992, pp. 505-507.

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