Abstract

A liquid-nitrogen-cooled Tm, Ho:YLF laser is constructed with a 10-mm-long Tm(6%) and Ho(0.5%) codoped yttrium lithium fluoride crystal pumped by a laser diode operating at 792 nm. The laser output power is improved by cooling the Tm, Ho:YLF crystal from 300 to 77 K. When the crystal is kept at 77 K, the laser threshold pump power is 230 mW, the slope efficiency is 27.4%, and the maximum optical-tooptical efficiency is 19.9%. At the same time, the relation between the input power and the output power at different temperatures is obtained.

© 2005 Chinese Optics Letters

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P. Laporta, M. Marano, L. Pallaro, and S. Taccheo, Optics and Lasers in Engineering 37, 447 (2002).

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S. W. Henderson, P. J. M. Suni, C. P. Hale, S. M. Hannon, J. R. Magee, D. L. Bruns, and E. H. Yuen, IEEE Trans. Geosci. Remote Sensing 31, 4 (1993).

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Appl. Phys. Lett.

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IEEE Trans. Geosci. Remote Sensing

S. W. Henderson, P. J. M. Suni, C. P. Hale, S. M. Hannon, J. R. Magee, D. L. Bruns, and E. H. Yuen, IEEE Trans. Geosci. Remote Sensing 31, 4 (1993).

Opt. Lett.

Optics and Lasers in Engineering

P. Laporta, M. Marano, L. Pallaro, and S. Taccheo, Optics and Lasers in Engineering 37, 447 (2002).

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