【摘 要】
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As a crucial parameter in the design and analysis of laser performances,stimulated emission (SE) cross-section is currently considered to be dependent on severa
【机 构】
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Department of Precision Instrument, State Key Laboratory of Precision Measurement and Instruments, T
论文部分内容阅读
As a crucial parameter in the design and analysis of laser performances,stimulated emission (SE) cross-section is currently considered to be dependent on several factors,such as temperatures and eigen-polarizations for anisotropic crystals.In contrast with these factors,impact of propagating directions upon SE cross-section has gaered less attention.In this paper,to investigate the SE cross-section in arbitrary propagating directions,fluorescence spectra for the transition 4F3/2 → 4I11/2 in Nd:YVO4 are measured in different propagating directions.Based on Fuchtbauer-Ladenburg equation model,the propagating direction-dependent SE cross-section spectra in Nd∶YVO4 are obtained for the first time,to our best knowledge.A novel concept of anisotropic SE cross-section is proposed to interpret the propagating direction-dependent effect.The experiment results reveal that for an arbitrary propagating direction the SE cross-section of e light around 1064 nm can be expressed as a superposition from two principle axial propagating directions with a weight of plane projection.
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