[1] [1] Morris J A, Pollock C R. Passive Q switching of a diode-pumped and Nd:YAG laser with a saturable absorber. Opt. Lett., 1990, 15(8):440～442

[2] [2] Beach R, Davin J, Mitchell S et al.. Passive Q-switched transverse-diode-pumped Nd3+:YLF laser oscillator. Opt. Lett., 1992, 17(2):124～126

[3] [3] Gui Y, Yao G, Ji T et al.. Passive Q-switching of Nd:YAG laser using Cr4+:YAG as a saturable absorber. in Digest of Conference on Lasers and Electro-Optics, Washington, D.C.: Optics Society of America, 1984. 166～172

[4] [4] Danilov A A, Evstigneev V L, ll′ichev N N et al.. Compact GSGG:Cr3+:Nd3+ laser with passive Q switching. Sov. J. Quantum Electron., 1987, 17(5):573～574

[5] [5] Demchuk M I, Mikhailov V P, Zhavoronkov N I et al.. Chromium-doped forsterite as a solid-state saturable absorber. Opt. Lett., 1992, 17(13):929～930

[6] [6] Stokowski S E, Randles M H, Morris R C. Growth and characterization of large Nd, Cr:GSGG crystals for high-average-power slab lasers. IEEE J. Quantum Electron., 1988, QE-24(6):934～948

[7] [7] Petricevic V, Gayen S K, Alfano R R. Laser action in chromium-actived forsterite for near-infrared excitation: Is Cr the lasing ion Appl. Phys. Lett., 1988, 53(26):2590～2592

[8] [8] Zhou S, Lee K K, Chen Y C. Self-stabilized single-longitudinal-mode operation in a self-Q-switched Cr, Nd:YAG laser. Opt. Lett., 1993, 18(17):1418～1419

[9] [9] Kolbas R M, Anderson N G, Laidig W D et al.. Strained-layer InGaAs-GaAs-AlGaAs photopumped and current injection lasers. IEEE J. Quantum Electron., 1988, QE-24(8):1605～1613

[10] [10] Pour D P, Gilbert D B, Fabian K B et al.. Low degration rate in strained InGaAs/AlGaAs single quantum well lasers. IEEE Photon. Technol. Lett., 1990, 2(2):173～174

[11] [11] Payre S A, Krupke W F. A glimpse into the laser crystal ball. Optics & Photonics News., 1996, 7(8):31～35