Laser action in chromium-activated forsterite for near-infrared excitation: Is Cr4+ the lasing ion?

Petricˇevic, V.; Gayen, S. K.; Alfano, R. R.
December 1988
Applied Physics Letters;12/26/1988, Vol. 53 Issue 26, p2590
Academic Journal
Room-temperature pulsed laser action has been obtained in chromium-activated forsterite (Cr:Mg2SiO4) for excitation of the near-infrared absorption band of the system by the 1064 nm radiation from a Nd:YAG laser. The characteristics of laser emission are similar to those observed for 532 nm pumping. It is suggested that the laser action is due to a ‘‘center’’ other than the trivalent chromium (Cr3+), presumably the tetravalent chromium (Cr4+).


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