TY - JOUR
T1 - Observation of power drop and low threshold due to beam waist shrinkage around critical configurations in an end-pumped Nd:YVO4 laser
AU - Wu, Hsiao Hua
AU - Sheu, Chich Chang
AU - Chen, Ting Wei
AU - Wei, Ming Dar
AU - Hsieh, Wen Feng
N1 - Funding Information:
This research was partially supported by the National Science Council (NSC) of the Republic of China under grant NSC87-2112-M029-002 and NSC87-2112-M009-002, and one of the authors (M.-D. W.) would like to thank NSC for providing fellowship.
PY - 1999/7/15
Y1 - 1999/7/15
N2 - Under pumping spot size less than that of the cavity mode, we observed a decrease of the fundamental mode power in an end-pumped solid-state laser when the cavity length was adjusted approaching certain critical resonator configurations where the transverse modes are degenerate. In the proximity of these configurations, we found, for the first time to our knowledge, that the laser exhibits a relatively low threshold pump power together with an unexpected far-field beam profile and shrinking beam waist.
AB - Under pumping spot size less than that of the cavity mode, we observed a decrease of the fundamental mode power in an end-pumped solid-state laser when the cavity length was adjusted approaching certain critical resonator configurations where the transverse modes are degenerate. In the proximity of these configurations, we found, for the first time to our knowledge, that the laser exhibits a relatively low threshold pump power together with an unexpected far-field beam profile and shrinking beam waist.
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U2 - 10.1016/S0030-4018(99)00216-3
DO - 10.1016/S0030-4018(99)00216-3
M3 - Article
AN - SCOPUS:0032655884
SN - 0030-4018
VL - 165
SP - 225
EP - 229
JO - Optics Communications
JF - Optics Communications
IS - 4
ER -