Coherent light generators – Particular active media – Semiconductor
Patent
1997-04-22
2000-01-04
Bovernick, Rodney
Coherent light generators
Particular active media
Semiconductor
372 43, 372 26, 372 37, 257607, H01S 319
Patent
active
060118105
ABSTRACT:
A method for doping semiconductors used for far infrared lasers with non-hydrogenic acceptors having binding energies larger than the energy of the laser photons. Doping of germanium or silicon crystals with beryllium, zinc or copper. A far infrared laser comprising germanium crystals doped with double or triple acceptor dopants permitting the doped laser to be tuned continuously from 1 to 4 terahertz and to operate in continuous mode. A method for operating semiconductor hole population inversion lasers with a closed cycle refrigerator.
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Brundermann, E. et al., "Miniaturization of p-Ge Lasers: Progress Toward Continuous Wave Operation", Appl. Phys. Lett., 68 (10), pp. 1359-1361, Mar. 4, 1996.
Aslanov, G. A. et al., "Nonlinearity of the Photoconductivity of Germanium Doped with Mercury, Cobalt, and Zinc and Excited with (lambda)=10.6-(mu) m Radiation", Semiconductors 27 (2), pp. 154-157, Feb. 1993.
E. Brundermann, et al., Double Acceptor Doped Ge: A New Medium For Inter-valence-band Lasers, Appl. Phys. Lett., 68 (22) 3075-3077, (May 27, 1996).
Susumu Komiyama, et al., Polarization of the Far-infrared Laser Oscillation in p-Ge in Faraday Configuration, J. Appl. Phys., 62 (9) 3552-3558, (Nov. 1, 1987).
E. Brundermann, et al., Tunable Solid State P-Type Germanium Laser in the Frequency Range From 1 to 4 THz, Proc. 30th ESLAB Symp., 175-177 (Sep. 1996).
G. Sirmain, et al., Stimulated Far-Infrared Emission From Copper-doped Germanium Crystals, Appl. Phys. Lett., 70 (13), 1659-1661 (Mar. 31, 1997).
O. D. Dubon, et al., Terahertz Emission From p-Type Germanium Lasers Doped With Novel Acceptors, LBNL-39888, 1-7, Proc. 8th Int'l Symp. on Space Terahertz Technology, (Mar. 1997).
Brundermann Erik
Haller Eugene E.
Bovernick Rodney
Kim Sung T.
The Regents of the University of California
Verny Hana
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