A crystalline-orientation self-selected linearly polarized Yb : Y(3)Al(5)O(12) microchip laser

作者：Dong Jun^*; Shirakawa Akira; Ueda Ken ichi

来源：Applied Physics Letters, 2008, 93(10): 101105.

DOI：10.1063/1.2980423

Crystalline-orientation and pump dependent polarization states of Yb:Y(3)Al(5)O(12) microchip lasers were observed experimentally. Linear polarization was observed at six crystalline orientations in the (111) plane relative to the beam propagation direction along the (111) crystalline axis of Yb:Y(3)Al(5)O(12) crystal. The extinction ratio of the linear polarization decreases and the laser tends to oscillate at random polarization state at high pump power levels. Linear polarization states of Yb:Y(3)Al(5)O(12) microchip laser was selected by the anisotropic spectroscopic properties of the Yb(3+)-ion in cubic Y(3)Al(5)O(12) crystal. The random polarization oscillation at high pump power was caused by the strong thermal-induced birefringence and depolarization.

• 出版日期2008-9-8