Thermal lensing of diode side-pumped solid-state lasers

The pump energy distribution in a diode side-pumped solid-state laser, is an overlap of propagating Gaussian beams. A simple model has been developed to calculate the thermal focal length of a diode side-pumped solid-state laser, which is based on a thermal model with a Gaussian heat density in any cross section of a laser rod. It can be seen that as the waists of pump beams increase, the energy distribution tends to be uniform and the thermal focal length tends to be long, which means a smaller thermal focusing.

[1]  D. Marcuse.  Light transmission optics , 1972 .

[2]  Irene A. Stegun,et al.  Handbook of Mathematical Functions. , 1966 .

[3]  Shuichi Fujikawa,et al.  High-power and high-efficiency operation of a CW-diode-side-pumped Nd:YAG rod laser , 1997 .

[4]  Shuichi Fujikawa,et al.  80 W cw TEM00 1064 nm beam generation by use of a laser-diode-side-pumped Nd:YAG rod laser , 1997 .

[5]  B. Ozygus,et al.  Thermal lens determination of end-pumped solid-state lasers using primary degeneration modes , 1997 .

[6]  A. K. Cousins,et al.  Temperature and thermal stress scaling in finite-length end-pumped laser rods , 1992 .

[7]  Walter Koechner,et al.  Solid-State Laser Engineering , 1976 .

[8]  R. A. Fields,et al.  Thermal modeling of continuous‐wave end‐pumped solid‐state lasers , 1990 .

[9]  S. B. Sutton,et al.  Simple analytical method to calculate the radial energy deposition profile in an isotropic diode-pumped solid-state laser rod. , 1996, Applied optics.

[10]  D. Welford,et al.  Observation of enhanced thermal lensing due to near-Gaussian pump energy deposition in a laser-diode side-pumped Nd:YAG laser , 1992 .

[11]  Yung-Fu Chen,et al.  Optimization in scaling fiber-coupled laser-diode end-pumped lasers to higher power: influence of thermal effect , 1997 .

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

[13]  B. Ozygus,et al.  Thermal lens determination of end‐pumped solid‐state lasers with transverse beat frequencies , 1995 .