Subpicosecond ring laser

Details Subpicosecond ring laser Subpicosecond ring laser

1981-05-01

1983-08-23

Sikes, William L.

Coherent light generators

Particular resonant cavity

Folded cavity

372 18, 372 20, 372 32, 372 26, H01S 3083

Patent

active

044008147

ABSTRACT:
A ring cavity laser is disclosed wherein a Rhodamine 6G dye stream is used as the gain medium, and a saturable absorber stream is positioned in the ring cavity at a point such that the time difference between pulses arriving at the gain stream is not small compared to the recovery time of the gain medium. The saturable absorber is DODCI dissolved in ethylene glycol passed through a specially constructed nozzle that creates a dye stream having a thickness of about 10 microns in the optical cavity. As a result of this thin saturable absorber, the two counterpropagating pulses that collide in the saturable absorber are caused to interact in a way that results in a decrease of the pulse duration and an equalization of the pulse intensities.

REFERENCES:
patent: 3978429 (1976-10-01), Ippen et al.
patent: 4227159 (1980-10-01), Barrett et al.
"Wavelength Tuning of an Intracavity Pumped cw Mode-Locked Dye Laser"; Runge; Opt. Comm., vol. 5, No. 5, Aug. 1972.
"Pulse Evolution in Mode-Locked Quasi-Cont. Lasers"; New; IEEE Jou. of Quant. Elect., vol. QE-10, No. 2, Feb. 2, 1974.
"Unidirect. Traveling Wave Operation of a Mode-Locked Nd:Glass Ring Laser"; Fedosejevs et al.; Tech. Digest of 9th Int. Conf. on Quant. Elect., 1976, pp. 68D-69D.
"Methods of Generation", Bradley; Topics in Appl. Phys., vol. 18, 1977.
"Frequency Stabilization of a cw Dye Laser"; Grove et al., Proceedings of the Soc. of Photo-Optical Instru. Eng., vol. 49, Impact of Lasers in Spectroscopy, San Diego, Calif., USA (Aug. 19-20, 1974).
"Laser Mode-Locking with Saturable Absorbers", Garmire et al., IEEE Jour. Quant. Elect., vol. QE--3, No. 6, 1967 Jun., pp. 222-226.
"Relationship Between Saturable Absorber Cell Length and Pulse Duration in Passively Mode-Locked Lasers", Bradley et al., Opt. Comm., vol. 2, No. 1, May/Jun. 1970.
"Subpicosecond Kilowatt Pulses from a Mode-Locked cw Dye Laser", Shank et al.; Appl. Phys. Lett., vol. 24, No. 8, Apr. 15, 1974.
"Passive Mode Locking of the cw Dye Laser", Ippen et al.; Appl. Phys. Lett., vol. 21, No. 8, Oct. 15, 1972.
"A Mode-Locked cw Dye Laser", Dienes et al.; Appl. Phys. Lett., vol. 19, No. 8, Oct. 1974.

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