Yb:FAP and related materials, laser gain medium comprising same,

Details Yb:FAP and related materials, laser gain medium comprising same, Yb:FAP and related materials, laser gain medium comprising same,

1991-11-15

1994-01-18

Bovernick, Rodney B.

Coherent light generators

Particular active media

Insulating crystal

H01S 316

Patent

active

052804925

ABSTRACT:
An ytterbium doped laser material remarkably superior to all others, including Yb:YAG, comprises Ytterbium doped apatite (Yb:Ca.sub.5 (PO.sub.4).sub.3 F) or Yb:FAP, or ytterbium doped crystals that are structurally related to FAP. The new laser material is used in laser systems pumped by diode pump sources having an output near 0.905 microns or 0.98 microns, such as InGaAs and AlInGaAs, or other narrowband pump sources near 0.905 microns or 0.98 microns. The laser systems are operated in either the conventional or ground state depletion mode.

REFERENCES:
Morozov, et al., Spectral and Luminescent Characteristics of Fluoropatite Single Crystals Activated by Rare Earth Ions, May 28, 1970, pp. 590-596.
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Berger et al., High Power, High Efficient Neodymium: Yttrium Aluminum Garnet Laser End Pumped by a Laser Diode Array, Appl. Phys. Lett. 51(16), pp. 1212-1214.
Suni et al., 1-mJ/pulse Tm:YAG Laser Pumped by a 3-W Diode Laser, Optics Letters, vol. 16, No. 11, pp. 817-819, Jun. 1, 1991.
Killinger, Phonon-assisted Unconversion in 1.64-.mu.m Er:YAG Lasers, Digest of Tech. Papers, paper THJ4, p. 240, CLEO, 1987.
Bour et al., Two-Dimensional Array of High-Power Strained Quantum Well Lasers with .lambda.=0.95 .mu.m, Appl. Phys. Lett. 54(26), pp. 2637-2638, Jun. 26, 1989.
Krupke, et al., Ground-State Depleted Solid-State Lasers: Principles, Characteristics and Scaling, Optical and Quantum Elect., 22 (1990) S1-S21.
Reinberg et al., GaAs:Si LED Pumped Yb-Doped YAG Laser, Applied Physics Letters, vol. 19, No. 1, pp. 11-13, Jul. 1, 1971.
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Stoneman et al., Laser-Pumped 2.8 .mu.m Er3+:GSGG Laser, Digest of Technical Papers, paper CTu06, pp. 134-135, CLEO 1991.
Storm et al., Single Mode Lasing of Ho:Tm:YAG at 2.091 Mircrons in a Monolithic Crystal, Adv. Solid-State Lasers, Tech. Digest, Mar. 5-7, 1990, Utah.
Kane et al., Diode-Pumped Single-Frequency Lases and Q-Switched Laser Using Tm: YAG and Tm,Ho:YAG, OSA Processings on Adv. Solid-State Lasers, vol. 6, 1990, Utah.
Prener, The Growth and Crystallographic Properties of Calcium Fluor-and Chlorapatite Crystals, Solid State Science, vol. 114, No. 1, pp. 77-83, 1/67.
Ohlmann et al., Spectroscopic and Laser Characteristics of Neodymium-Doped Calcium Fluorophosphate, Applied Optics, vol. 7, No. 5, pp. 905-914, May 1968.

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