Optically transparent heat sink for longitudinally cooling an el

Coherent light generators – Particular temperature control – Heat sink

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372 92, 372 98, H01S 304

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057967660

ABSTRACT:
A longitudinally-cooled laser element assembly comprises an optically transparent heat sink (OTH) coupled to a laser element and a heat sink. An etalon structure including a first flat surface and a second, substantially parallel flat surface is formed in the laser element and/or the OTH. In some embodiments, a balanced etalon is provided by forming a reflector on the second flat surface of the etalon that has a reflectivity approximately equal to the Fresnel loss at the interface between the OTH and the laser element. In some embodiments the laser element assembly includes a second OTH coupled to the laser element at a second interface, thereby defining a second Fresnel loss. Preferably, the second OTH has an index of refraction substantially equal to the index of refraction of the first OTH, so that said first and second Fresnel losses are approximately equal and a balanced etalon is formed. In some embodiments the laser element comprises a solid-state gain medium. In other embodiments the laser element comprises a nonlinear frequency conversion crystal. An intracavity frequency-converted laser is described in which OTHs are used to cool both the gain medium and the nonlinear material.

REFERENCES:
patent: 4731787 (1988-03-01), Fan et al.
patent: 4739507 (1988-04-01), Byer et al.
patent: 4791631 (1988-12-01), Baumert et al.
patent: 4797893 (1989-01-01), Dixon
patent: 4809291 (1989-02-01), Byer et al.
patent: 4847851 (1989-07-01), Dixon
patent: 4860304 (1989-08-01), Mooradian
patent: 4872177 (1989-10-01), Baer et al.
patent: 4879722 (1989-11-01), Dixon et al.
patent: 4879723 (1989-11-01), Dixon et al.
patent: 4933947 (1990-06-01), Anthon et al.
patent: 4942582 (1990-07-01), Kintz et al.
patent: 4953166 (1990-08-01), Mooradian
patent: 4982405 (1991-01-01), Zayhowski et al.
patent: 5022745 (1991-06-01), Zayhowski et al.
patent: 5063566 (1991-11-01), Dixon
patent: 5070505 (1991-12-01), Dixon
patent: 5115445 (1992-05-01), Mooradian
patent: 5164947 (1992-11-01), Lukas et al.
patent: 5222088 (1993-06-01), Amano
patent: 5287381 (1994-02-01), Hyuga et al.
patent: 5331650 (1994-07-01), Maeda et al.
patent: 5441803 (1995-08-01), Meissner
patent: 5511085 (1996-04-01), Marshall
Byer, R. (1989) Diode laser-pumped solid-state lasers. Science 239:742-747.
Dorozhkin, L., et al. (1981) Optical second-harmonic generation in a new nonlinear active medium . . . Sov. Tech. Phys. Lett. 7:555-556.
Dimitriev, V., et al. (1979) Simultaneous emission at the fundamental frequency and the second harmonic . . . Sov Tech. Phys. Lett., 5(11):590.
Fan, T., et al. (1986) Nd:MgO:LiNbO.sub.3 spectroscopy and laser devices. J. Opt. Soc. Am. 3(1):140-147.
Jensen, T., et al. (1994) Spectroscopic characterization and laser performance of . . . Appl. Phys. B. 58:373-379.
Lin, J.T. (1989) Progress Report: Diode pumping and frequency conversion. Lasers & Optronics 61-66.
Lin, J.T. (1990) Doubled jeopardy: the blue-green race's new players. Lasers & Optronics 34-40.
Lu, B., et al. (1986) Excited emission and self-frequency-doubling effect of . . . Chinese Phys. Lett. 3(9):413-416.
Nabors, C., et al. (1992) High-power, continuous-wave, Nd:YAG microchip laser array. Optics Letters 17(22):1587-1589.
Payne, S., et al. (1992) 752 nm wing-pumped Cr:LiSAF laser. IEEE Journal of Quantum Electronics 28(4):1188-1196.
Risk, W., et al. (1989) Diode laser pumped blue light source at 473nm using intracavity frequency doubling of a 946 nm Nd:YAG laser. Appl. Phys. Lett. 54(17):1625-1627.
Sasaki, T., et al. (1991) Single-longitudinal mode operation and second-harmonic generation of Nd:YVO.sub.4 microchip lasers. Optics Letters 16(21):1665-1667 (1991).
Schutz, L., et al. (May 23, 1990) Self-frequency doubling Nd:YAB laser pumped by a diode laser. CLEO-90, paper CWC4.
Tatsuno, K., et al. (May 1992) Highly efficient and stable green microlaser consisting of Nd:YVO.sub.4 with interactivity KTP for optical storage. CLEO 92, Paper CW08.
Wang, S., et al. (1990) Characteristics of neodymium yttrium aluminum borate as a diode-pumped laser material Topical Mtng. on Advance Lasers, Session TuB4 pp.23-25.
Yaney, P., et al. (1976) Spectroscopic studies and analysis of the laser states of Nd.sup.3 in YVO.sub.4. J. Opt. Soc. Am. 66(12):1405-1414.
Zagumennyl, A., et al. (1992) The ND:GdVO.sub.4 crystal: a new material for diode-pumped lasers. Sov. J. Quantum Electron 22(12):1071-1072.
Zayhowski, J. (1990) Microchip lasers. The Lincoln Laboratory Journal 3(3):427-445.
Patent Abstract No. A 4291976. Abstract date Mar. 3, 1993 vol. 17 No. 104.

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