2.7 .mu.M laser crystalline material utilizing multiple-channel

Details 2.7 .mu.M laser crystalline material utilizing multiple-channel 2.7 .mu.M laser crystalline material utilizing multiple-channel

1997-12-16

1999-11-09

Scott, Jr., Leon

Coherent light generators

Particular active media

Insulating crystal

372 68, H01S 316

Patent

active

059827963

ABSTRACT:
A Cr/Tm/Er-doped, yttrium- or lutetium-garnet host material crystal for a solid-state laser, wherein about 3 to about 8 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Tm.sup.3+ ions, about 7 to about 22 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Er.sup.3+ ions, and about 0.6 to about 1.6 atomic percent of the octahedral sites of the garnet structure are occupied by Cr.sup.3+ ions, which crystal lases under the influence of a pumping means at a wavelength of no more than about 2.7.mu..

REFERENCES:
patent: 5088103 (1992-02-01), Esterowitz et al.
patent: 5742632 (1998-04-01), Barnes et al.
"Q-Switched CTE:YAG (2.69 .mu.m) Laser Ablation: Basic Investigations on Soft (Corneal) and Hard (Dental) Tissues", Kermani et al., Lasers in Surgery and Medicine 13:537-542 (1993).
"Spectroscopic Aspects of (Cr, Tm-Er):YAG Active Media", Antipenko et al., Izvestiya Akademii Nauk SSSR. Seriya Fizicheskaya, vol. 54, No. 12, pp. 2393-2396 (1990).
"Cr:Tm:Er:TAG laser for medical applications at 2.69 .mu.m", Antipenko et al., Sov. J. Opt. Technol. 60 (6) Jun. 1993, pp. 418-419.
"Steady-state emission from a Y.sub.3 AI.sub.5 O.sub.12 :ER.sup.3+ laser (.lambda.=2.94.mu., T=300.degree.K)", Bagdasarov et al., Sov. J. Quantum Electron, 13(2), Feb. 1983, pp. 262-263.
"Efficient cross-relaxation laser emitting at .lambda.=2.94.mu.", Zhekov et al., Sov. J. Quantum Electron, 13(9), Sep. 1983, pp. 1235-1237.
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"Temperature dependence of a 2.94.mu.m YAG:Er laser and population of the laser levels", Spring et al., J. Appl. Phys., vol. 69, (2), Jan. 15, 1991, pp. 581-583.
"Efficiency of Energy Transfer between Cr.sup.3+ and TM.sup.3+ in Scandium and Aluminum Garnets", Quarles et al., paper presented at NRL seminar, 1988.
"Operation of the High Dopant Density ER:YAG at 2.94.mu.m", Bass et al., paper submitted to Proceedings of Tunable Laser Conference, 1986.
"Multiphonon relaxation in the rare-earth ions doped laser crystals", Basiev et al., General Physics Institute, Moscow, Russia.
"High repetition rate, high average power Er:YAG laset at 2.94.mu.m", Charlton et al., Journal of Modern Optics, 1989, vol. 36, No. 10, 1393-1400.

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