Quantitative measurement of thermal lensing in diode-side-pumped Nd:YAG laser by use of digital holographic interferometry.

Thermal lensing in diode-side-pumped Nd:YAG laser has been measured quantitatively using digital holographic interferometry. A series of holograms, carrying the information of the laser rod under different pump currents, are recorded with a CCD and reconstructed numerically. The optical path difference induced by the thermal lensing and the corresponding evolution process under different currents are obtained accordingly. Further, the thermal lensing diopters, induced aberrations, and its Zernike coefficients are calculated. The proposed method can be applied in the thermal lensing measurement and the optimization design of a laser resonator.

[1]  Jianlin Zhao,et al.  Visual and quantitative measurement of the temperature distribution of heat conduction process in glass based on digital holographic interferometry , 2012 .

[2]  Jianlin Zhao,et al.  Real-time monitoring of the solution concentration variation during the crystallization process of protein-lysozyme by using digital holographic interferometry. , 2012, Optics express.

[3]  W. A. Clarkson,et al.  Thermal effects and their mitigation in end-pumped solid-state lasers , 2001 .

[4]  A. Endo,et al.  Measurement of thermal lensing in a power amplifier of a terawatt Ti:sapphire laser , 2002 .

[5]  D C Burnham.  Simple measurement of thermal lensing effects in laser rods. , 1970, Applied optics.

[6]  T. Graf,et al.  Numerical simulation and analytical description of thermally induced birefringence in laser rods , 2000 .

[7]  David G. Lancaster,et al.  Thermal-lens measurement of a quasi steady-state repetitively flashlamp-pumped Cr, Tm, Ho:YAG laser , 1998 .

[8]  Jianlin Zhao,et al.  Real-time visualization of Karman vortex street in water flow field by using digital holography. , 2009, Optics express.

[9]  P. Georges,et al.  Thermal lensing in diode-pumped ytterbium Lasers-Part I: theoretical analysis and wavefront measurements , 2004, IEEE Journal of Quantum Electronics.

[10]  Qican Zhang,et al.  Quality-guided phase unwrapping technique: comparison of quality maps and guiding strategies. , 2011, Applied optics.

[11]  P. Dekker,et al.  Thermal lensing measurements and thermal conductivity of Yb:YAB , 2003 .

[12]  Patrick Georges,et al.  On thermal effects in solid state lasers: the case of ytterbium-doped materials , 2006 .

[13]  C. Froehly,et al.  Iterative reconstruction of thermally induced phase distortion in a Nd3+:YVO4 laser , 2002 .

[14]  Anand Asundi,et al.  Thermal lensing effects for diode-end-pumped Nd:YVO4 and Nd:YAG lasers , 2004 .

[15]  A. Nishimura,et al.  Temporal Change of Thermal Lens Effects on Highly Pumped Ytterbium Glass by Wavefront Measurement , 2001 .

[16]  Thermal lensing measurements in line-focus end-pumped neodymium yttrium aluminium garnet using holographic lateral shearing interferometry , 1998 .

[17]  Yung-Sheng Huang,et al.  Thermo-optic effects affecting the high pump power end pumped solid state lasers: Modeling and analysis , 2007 .

[18]  Jianlin Zhao,et al.  Transmission and total internal reflection integrated digital holographic microscopy. , 2016, Optics letters.

[19]  B. Neuenschwander,et al.  Thermal effects in solid-state laser materials , 1999 .

[20]  Jianlin Zhao,et al.  Dynamical measurement of refractive index distribution using digital holographic interferometry based on total internal reflection. , 2015, Optics express.

[21]  J. Whinnery,et al.  New thermooptical measurement method and a comparison with other methods. , 1973, Applied optics.