An alternative approach to determine the fractional heat load in solid state laser materials: application to diode-pumped Nd:YVO4 laser |
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Authors: | Pranab K. Mukhopadhyay Jogy George K. Ranganathan S. K. Sharma T. P. S. Nathan |
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Affiliation: | Diode Pumped Solid State Laser Group, Center for Advanced Technology, Indore, MP 452013, India |
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Abstract: | A simple approach is described and used for on-line measurement of the fractional heat-load parameter ξ in an operating diode-pumped Nd:YVO4 laser at 1.06 μm wavelength for different doping concentrations. The method is based on the fact that if the thermo-optical properties of the sample are known then the ξ-parameter can be estimated from the measured effective focal length induced by the pump beam and any other lensing effect due to mechanical mounting of the sample for a given pumping configuration. The value of the fractional heat-load parameter estimated by our technique was in excellent agreement with the earlier reported values. |
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Keywords: | Fractional heat load Thermal lens Diode pumping Nd:YVO4 crystal |
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