Abstract

Nd lasers operating on the ${ }^4{F}_{3/2}$ to ${ }^4{I}_{9/2}$ transition, usually at ∼0.94 µm, can provide a useful source for many applications when they operate efficiently. Both efficiency and energy output are substantially increased by two new approaches: improvement of the basic design and the use of new laser materials, specifically, Nd:GYAG. Laser performance and gain results for both Nd:YAG and Nd:GYAG lasers that operate on the ${ }^4{F}_{3/2}$ to ${ }^4{I}_{9/2}$ transition are reported as a function of temperature. For the sake of comparison, results for these lasers when they operate on the ${ }^4{F}_{3/2}$ to ${ }^4{I}_{11/2}$ transition at 1.064 µm are reported as well. In addition, preliminary second-harmonic generation results for this 0.94-µm laser are reported.

© 1999 Optical Society of America

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