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ICOP & ICPET 2018, 24 - : 105-108 Back to browse issues page
Investigation of influence of properties of the laser’s pump beam and laser crystal on the generation of thermally-affected Bessel-Gauss beam
Reza Fallah * 1, Hamid Nadgaran 2
1- Physics Department, University of Birjand
2- Physics Department, Shiraz University
Abstract:   (181 Views)
The generation of Helmholtz–Gauss beam families such as Bessel–Gauss (BG) beam can be dramatically suffered from thermal-induced effects. İn this work, The output BG beams of a solid-state laser were assumed to pass through an ABCD optical system matrix. The analytical solutions show that the induced heat in the crystal depends on pump power, pump beam wasit, thermal conductivity and absorption coefficient of laser crystal. İn order to investigate the thermal effects, the intensity distributions of the BG beams against radial distance under various pump power, pump beam waist, absorption coefficient and thermal conductivity have been simulated. The results show that for high pump-power values and small values of pump waist, the thermal-induced effects are so dramatic and the beam intensity distribution profile is so altered that the identification of BG beams is not easily possible, but large pump waist and high thermal conductivity can eventually make the laser output similar to nonthermal case despite high pumping power is received. The results of this work are a valuable aid to experimenters for beam identification.
Keywords: Solid-state laser, Thermal effects, Bessel-Gaussian beam, Thermal lens, Laser beam characterization
Full-Text [PDF 835 kb]   (64 Downloads)    
Type of Study: Research | Subject: Special
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Fallah R, Nadgaran H. Investigation of influence of properties of the laser’s pump beam and laser crystal on the generation of thermally-affected Bessel-Gauss beam. ICOP & ICPET. 2018; 24 :105-108
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Volume 24 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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