论文信息 - Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser.

Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser.

Q switching of a diode-pumped Nd3+:KGd(WO4)2 laser at 1.35 microm by use of cobalt-doped magnesium- and zinc-aluminosilicate glass ceramics as saturable absorbers is demonstrated. Q-switching efficiency up to 40% has been obtained. Ground-state absorption cross sections for Co2+ ions at the wavelengths of 1.35 and 1.54 microm are estimated to be (3.5-4.0) x 10(-19) cm2. Bleaching relaxation times under the excitation of the 4A2 --> 4T1(4F) transition of tetrahedrally coordinated Co2+ ions are of 280 +/- 50 ns and 700 +/- 80 ns for magnesium- and zinc-aluminosilicate glass ceramics, respectively.

[1] I. A. Denisov,et al. Optical absorption and luminescence study of cobalt-doped magnesium aluminosilicate glass ceramics , 2002 .

[2] J. Ferguson,et al. Crystal‐Field Spectra of d3,7 Ions. V. Tetrahedral Co2+ in ZnAl2O4 Spinel , 1969 .

[3] T. I. Chuvaeva,et al. On the Phase Separation and Crystallization of Glasses in the MgO–Al2O3–SiO2–TiO2 System , 2003 .

[4] H Melchior,et al. Passively Q-switched 1.34- mum Nd:YVO(4) microchip laser with semiconductor saturable-absorber mirrors. , 1997, Optics letters.

[5] Hans Joachim Eichler,et al. Passively Q-switched m diode pumped Nd:KGW laser with V:YAG saturable absorber , 2001 .

[6] Alexander M. Malyarevich,et al. PbS-doped phosphate glasses saturable absorbers for 1.3-μm neodymium lasers , 2002 .

[7] I. A. Denisov,et al. Cobalt-doped transparent glass ceramic as a saturable absorber q switch for erbium:glass lasers. , 2001, Applied optics.

[8] I. A. Denisov,et al. Linear and nonlinear optical properties of cobalt-doped zinc aluminum glass ceramics , 2003 .

[9] A. Szabo,et al. Theory of Laser Giant Pulsing by a Saturable Absorber , 1965 .

[10] V. A. Lisinetskii,et al. All solid-state diode-pumped Raman laser with self-frequency conversion , 1999 .

[11] Igor A. Denisov,et al. Nonlinear absorption properties of Co2+:MgAl2O4 crystal , 2000 .

[12] Yen-Kuang Kuo,et al. Tunable Cr/sup 4+/:YSO Q-switched Cr:LiCAF laser , 1995 .