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2.0-micron laser applications

Recent interest in lasers in the 2 micron wavelength region has lead to crystal growth improvements and flashlamp-pumped operation at room temperatures. Holmium near 2.1 µm, thulium between 1.93 and 2.07 µm, and cobalt magnesium fluoride tunable from 1.75 to 2.5µm are finding uses in medical and dental applications. The improved eyesafety for these wavelengths also makes them candidates as laser rangefinders, LIDAR sources, and for remote sensing. A comparison of performance for these three laser materials with respect to these applications is included.