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Narrow linewidth, tunable dye laser by multiple-prism beam expander
, Article Optical and Quantum Electronics ; Volume 49, Issue 9 , 2017 ; 03068919 (ISSN) ; Rahbari, M ; Bonabi, R. S ; Sharif University of Technology
Abstract
12 mJ, 10-Hz green pulses from frequency doubled Nd:YAG laser was used for pumping Rhodamine 6G in a dye laser based on multiple-prism beam expander. In order to increase the stability of the output pulse, a unique dye cell with variable dimensions of active medium was designed and constructed. By using multiple-prism dispersion theory, conditions for zero-dispersion in two and four-prism beam expander configuration was calculated. In the case of two-prism configuration, tuning range of dye laser was 565–595 nm and the linewidth of pulse at 580 nm was about 1.8 nm and it is in good agreement with the calculated amount of 1.6 nm. Furthermore, using four-prism configuration tuning range of...