Thermal lens measurement of a LD end-pumped Nd: GdVO4 laser with stable resonator by a slit-scanning method

TN248; A simply method to measure the thermal focal length of a LD end-pumped Nd:GdVO4 solid state laser with a stable resonator is presented.By scanning a slit across the field with expression of multi-mode Gaussian distribution behind the output mirror of lasers,the radius and the M2 factor descri...

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Bibliographic Details
Published in:Optoelectronics letters 2005-09, Vol.1 (2), p.113-116
Main Authors: Zou, Jing, Zhao, Sheng-zhi, Yang, Ke-jian, Li, Gui-qiu, Song, Peng
Format: Article
Language:English
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Summary:TN248; A simply method to measure the thermal focal length of a LD end-pumped Nd:GdVO4 solid state laser with a stable resonator is presented.By scanning a slit across the field with expression of multi-mode Gaussian distribution behind the output mirror of lasers,the radius and the M2 factor describing the quality of beam can be measured.The waists of the multi-mode field and the TEM00 mode can be deduced according to the law of multi-mode Gassian beam propagation.Based on the ABCD matrix theory of a stable resonator,the thermal focal length of the active medium can be easily obtained.The thermal focal length of a LD end-pumped Nd:GdVO4 laser has been measured and the experimental results agree with the theoretically analyzed values.
ISSN:1673-1905
1993-5013
DOI:10.1007/BF03033681