15 February 2018 2.097μ Cth:YAG flashlamp pumped high energy high efficiency laser operation (patent pending)
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Abstract
Flashlamp pumped Cth:YAG lasers are mainly used in medical applications (urology). The main laser transition is at 2.13μ and is called a quasi-three level having an emission cross-section of 7x10-21 cm2 and a ground state absorption of approximately 5%/cm. Because of the relatively low absorption, combined with a modest emission cross-section, the laser requires high reflectivity output coupling, and therefore high intra-cavity energy density which limits the output to approximately 4J/pulse for reliable operation.

This paper will describe a method of efficiently generating high output energy at low intra-cavity energy density by using an alternative 2.097μ transition having an emission cross-section of 5x10-21 cm2 and a ground level absorption of approximately 14%/cm.
Conference Presentation
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Dan Bar-Joseph, Dan Bar-Joseph, } "2.097μ Cth:YAG flashlamp pumped high energy high efficiency laser operation (patent pending)", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 1051107 (15 February 2018); doi: 10.1117/12.2281504; https://doi.org/10.1117/12.2281504
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