Color centers for tunable lasers in the near infrared region

Details Color centers for tunable lasers in the near infrared region Color centers for tunable lasers in the near infrared region

1982-05-18

1987-06-09

Sikes, William L.

Coherent light generators

Particular active media

Insulating crystal

372 68, H01S 316

Patent

active

046726195

ABSTRACT:
Stable color centers capable of laser emission in the near infrared region of the optical spectrum are provided in alkali halide host crystals containing monovalent heavy metal cation impurities such as thallium, gallium, indium, silver and copper. The laser active color centers are formed by exposing the crystal to ionizing radiation followed by irradiation with light having a wavelength absorbed by the F centers. The resulting material is capable of stable, broadly tunable laser operation with high power output in the near infrared region. Oscillation on a single mode can be easily obtained.

REFERENCES:
Gellermann et al.; "Optical Properties and Stable, Broadly Tunable CW Laser Operation of New F.sub.A -Type Centers in Tl.sup.+ -Doped Alkali Halides", Optics Comm. es", Optus Comm. vol. 39, No. 6, Nov. 15, 1981, pp. 391-395.
Masunaga et al.; "Pressure Effect of Emission Spectra in Alkali Halide Crystals Containing Tl.sup.+ -Ions", Journ. of Phys. Soc. of Japan, vol. 43, No. 6, Dec. 1977.

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