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  • Chromium-Doped Crystal Shows Near-Infrared Tunability at Room Temperature

Photonics Spectra
Jan 1997
Scientists at the City University of New York have grown a chromium-doped laser crystal that they say is tunable in the near-infrared spectral range at room temperature. The researchers demonstrated gain-switched, tunable operation of the Cr4 crystal over a range of 1348 to 1492 nm and pulse energies of 0.4 mJ at 1.4 µm at a repetition rate of 100 Hz. The laser crystal, named "Cunyite" after the university where it was developed, would be suitable for diode pumping and for making miniature laser devices.

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