, Volume 52, Issue 6, pp 623–629

Thermal lens measurement technique in end-pumped solid state lasers: Application to diode-pumped microchip lasers


    • Center for Advanced Technology
  • P. K. Mukhopadhyay
    • Center for Advanced Technology
  • Jogy George
    • Center for Advanced Technology
  • S. K. Sharma
    • Center for Advanced Technology
Research Articles

DOI: 10.1007/BF02829868

Cite this article as:
Kapoor, R., Mukhopadhyay, P.K., George, J. et al. Pramana - J Phys (1999) 52: 623. doi:10.1007/BF02829868


A simple derivation, which relates the thermal lens focal length in solid state lasers to pump power and a method for direct estimation of thermal lens focal length, is reported. This method is applicable to any type of stable resonator. The method is used for the measurement of the thermal lens focal length with an accuracy of 8% in an axially pumped microchip laser. The variation of focal length with pump power is also measured.


Thermal lensmicrochip laserdiode pumping



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© Indian Academy of Sciences 1999