Femtosecond ultraviolet laser using ultra-thin beta barium borat

Details Femtosecond ultraviolet laser using ultra-thin beta barium borat Femtosecond ultraviolet laser using ultra-thin beta barium borat

1990-09-11

1991-07-23

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

372 18, 372 25, 372 54, 307427, H01S 310

Patent

active

050349511

ABSTRACT:
A laser pulse generator utilizes intracavity doubling in an ultrathin beta barium metaborate crystal to produce femtosecond pulses in the ultrashort ultraviolet wavelength range. The generator includes a colliding-pulse passively mode-locked ring dye laser which propagates a pulsed beam of primary laser light in a cavity. The primary light beam has a repetition rate of 10.sup.8 Hz and a pulse width in the femtosecond range. The crystal is located in the cavity so that the primary beam strikes one crystal surface at Brewsters angle and propagates through the crystal at its phase-matching angle. The primary beam and its second harmonic are emitted from the opposite surface, the harmonic wave having the same repetition rate and substantially the same width as the primary beam, but one-half its wavelength.

REFERENCES:
patent: 3934154 (1976-01-01), Cook, Jr.
patent: 4617665 (1986-10-01), Mourou et al.
patent: 4646308 (1987-02-01), Kafka et al.
patent: 4748631 (1988-05-01), Bjorklund
patent: 4793894 (1988-12-01), Jacco et al.
"Flux Growth of Large Single Crystals of Low Temperature Phase Barium Barium Metaborate", Jiang et al., Journal of Crystal Growth 79 (1986), 963-969.
"Measurement of Ultrashort Optical Pulses with .beta.-BaB.sub.2 O.sub.4 ", Cheng et al., Appl. Phys. Lett. 52 (7), Feb. 15, 1988, pp. 519-521.
"Growth and Characterization of Low Temperature Phase Barium Metaborate Crystals", Cheng et al., Journal of Crystal Growth 89 (1988), 553-559, Feb., 1988.
"A New-Type Ultraviolet SHG Crystal-.beta.-BaB.sub.2 O.sub.4 ", Chen et al., Scientia Sinica (Series B), vol. 28, No. 3, Mar. 1985, pp. 235-243.
"Optical, Mechanical, and Thermal Properties of Barium Borate", Davis et al., J. Appl. Phys. 62 (5), Sep. 1, 1987, pp. 1968-1983.
"Efficient Deep-Ultraviolet Generation by Frequency Doubling in .beta.-BaB.sub.2 O.sub.4 Crystals", Miyazaki et al., Optics Letters, Dec. 1986, vol. 11, No. 12, pp. 797-799.
"Linear Electro-Optic Effect in Barium Metaborate", Nakatani et al., Appl. Phys. Lett. 52 (16), Apr. 18, 1988, pp. 1288-1290.
"Second-Harmonic Generation to 2048 A in .beta.-BaB.sub.2 O.sub.4 ", Kato, IEEE Journal of Quantum Electronics, vol. QE-22, No. 7, Jul. 1986, pp. 1013-1014.
"Widely Tunable Optical Parametric Oscillator Using Urea", Rosker et al., Journal of the Optical Society of America B, vol. 2, p. 691, May 1985.
"Continuous Parametric Generation of Picosecond Light Pulses", Piskarskas et al., Sov. J. Quantum Electron, 18(2), Feb. 1988, pp. 155-156.
"Parametric Chirp and 20-Fold Compression of Pulses from a Quasi-cw Picosecond Optical Parametric Oscillator", Piskarskas et al., Sov. J. Quantum electron, 15(11), Nov. 1985, pp. 1539-1541.
"Generation of Synchronized Ultraviolet and Red Femtosecond Pulses", by Focht et al., IEEE Journal of Quantum Electronics, vol. 24, No. 2, Feb. 1988, pp. 431-434.
"Generation of Femtosecond UV Pulses by Intracavity Frequency Doubling in a Modelocked Dye Laser", Laermer et al., Optics Communications, vol. 67, No. 1, Jun. 1, 1988, pp. 58-62.
"Stabilization of a Femtosecond Dye Laser Synchronously Pumped by a Frequency-Doubled Mode-Locked YAG Laser", Chesnoy et al., Optics Letters, Oct. 1986, vol. 11, No. 10, pp. 635-637.
"Cavity-Length Detuning Effects and Stabilization of a Synchronously Pumped Femtosecond Linear Dye Laser", Dawson et al., Optics Letters, vol. 13, No. 2, Feb. 1988, pp. 126-128.
"Generation of Optical Pulses as Short as 27 Femtoseconds Directly From a Laser Balancing Self-Phase Modulation, Group-Velocity Dispersion, Saturable Absorption and Saturable Gain", Valdmanis et al., Optics Letters, Mar. 1985, vol. 10, No. 3, pp. 131-133.
"Generation of Optical Pulses Shorter than 0.1 psec by Colliding Pulse Mode Locking", Fork et al., Appl. Phys. Lett. (38) (9), May 1, 1981.
"Parametric Amplification in Spatially Extended Media and Application to the Design of Tuneable Oscillators at Optical Frequencies", Kroll, Physical Review, vol. 127, No. 4, Aug. 15, 1962, p. 1207.
"Tunable Coherent Parametric Oscillation in LiNbO.sub.3 at Optical Frequencies", Giordmaine et al., Physical Review Letters, vol. 14, No. 24, Jun. 14, 1965, p.
This invention was made with Government support under Grants Nos. DMR-85-16616-A01 and A02 of the National Science Foundation, and Grants Nos. N00014-88-K-2035 and N00014-86-K-2010 of the U.S. Department of Defense.

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