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Renaissance of inorganic liquid-host neodymium lasers: first demonstration that “liquid glass” lases continuously

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Abstract

Advantages of liquid-host neodymium lasers were recognized in the 1960s [1]. Pulsed lamp pumping produced high pulse energies and average powers, but transient heating effects seriously degraded laser beam quality and extinguished lasing. Improvements in solid-state lasers have made them more attractive for most applications. Nevertheless, heat-removal from poorly-conducting static gain media remains challenging. Developments in pump sources (especially diode-laser arrays) motivate a fresh look at liquid-host rare-earth lasers. Continuous excitation and steady flow of the gain medium [2] eliminate transients and facilitate beam-quality improvement. This first report of CW Nd: liquid laser operation suggests potential for scalability to high average power.

© 2003 Optical Society of America

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