Coherent light generators – Particular resonant cavity
Patent
1993-06-15
1995-03-28
Davie, James W.
Coherent light generators
Particular resonant cavity
372 22, 372 50, 372 75, H01S 3094
Patent
active
054024374
ABSTRACT:
A gain medium is disposed between two mirrors to form a resonant cavity. The cavity length is selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that a cavity mode frequency falls within the gain bandwidth. A nonlinear optical material is disposed either inside or outside the cavity to generate new laser wavelengths. The nonlinear optical material may be contained in a cavity which is resonant at the microchip laser frequency. Alternatively, the microchip laser may be tuned, for example thermally or by the application of a longitudinal or transverse stress, to the frequency of the resonant cavity. The laser is optically pumped by any appropriate source such as a semiconductor injection laser or laser array. Suitable gain media include Nd:YAG, Nd:GSGG and Nd pentaphosphate, and suitable non-linear optical material include MgO:LiNbO.sub.3 and KTP.
REFERENCES:
patent: 3808549 (1974-04-01), Maurer
patent: 3949320 (1976-04-01), Castleberry et al.
patent: 4002725 (1977-01-01), Bridenbaugh et al.
patent: 4734912 (1988-03-01), Scerbak et al.
patent: 4739507 (1988-04-01), Byer et al.
patent: 4797893 (1989-01-01), Dixon
patent: 4847851 (1989-07-01), Dixon
patent: 4860304 (1989-08-01), Mooradian
patent: 5115445 (1992-05-01), Mooradian
Zayhowski, et al., "Single-frequency Microchip Nd Lasers," Optics Letters, 14(1):24-26 Jan. 1989.
Kane, et al., "Frequency stability and offset locking of a laser-diode-pumped Nd:YAG monolithic nonplanar ring oscillator," Optics Letters, 12 pp. 175-177 Mar. 1987.
Castleberry, et al., "A Single Mode 2.06 Um Miniature Laser," Digest of Technical Papers, Jan. 21-24, 1974, MB7, pp. 1-4.
Saruwatari, et al., "Electroluminescent Diode Pumped Miniaturized LiNd P.sub.4 O.sub.12 Lasers," Review of the Electrical Communication Laboratories, 26(9-10):1111-1128 (Sep.-Oct. 1978).
Owyoung, et al., "Stress-induced tuning of a diode-laser-excited monolithic Nd:YAG laser," Optics Letters, 12(12):999-1001 (Dec. 1987).
Zhou, et al., "Efficient, frequency-stable laser-diode-pumped Nd:YAG laser," Optics Letters, 10(2):62-64 (Feb. 1985).
Kubodera, et al., "Pure single-mode LiNdP4012 solid-state laser transmitter for 1.3 .mu.m fiber-optic communications," Applied Optics, 21(19):3466-2469, Oct. 1982.
Kubodera, et al., "Efficient LiNdP4012 lasers pumped with a laser diode," Applied optics, 18(23):3882-3883 (Dec. 1979).
Winzer, et al., "Laser Emission from Miniaturized NdA13(B03)4 Crystals with Directly Applied Mirrors," IEEE, pp. 840-843 (1978). (No Month).
Winzer, et al., "Laser Emission from Polished NdP5014 Crystals with Directly Applied Mirrors," Applied Physics, vol. 11, pp. 121-130 (1976). (No Month).
Owyoung, et al., "Gain switching of a monolithic single-frequency laser-diode-excited Nd:YAG laser," Optics Letters, 10(10):484-486 (Oct. 1985).
Stone, et al., "Self-Contained LED-Pumped Single-Crystal Nd:YAG Fiber Laser," Fiber and Integrated Optics, 2(1):19-46 (1979). (No Month).
Moordian, "Laser Linewidth," Phyics Today, pp. 2-7 (May 1975).
Fleming et al., "Spectral characteristics of external-cavity controlled semiconductor lasers," IEEE, pp. 44-59 Jan. (1981).
Svelto, "Principles of Lasers," Plenum Press, NY, pp. 171-179 (1976). (No Month).
Smith, "Stabilized, Single-Frequency Output from a Long Laser Cavity," IEEE J Quantum Elec., QE-1(8):343-48 (Nov. 1965).
Davie James W.
Massachusetts Institute of Technology
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