COHERENT FLUORESCENCE FROM ZINC SULFIDE EXCITED BY TWO-PHOTON ABSORPTION
- 1 March 1968
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 12 (5), 193-195
- https://doi.org/10.1063/1.1651948
Abstract
Emission of coherent radiation was observed from ZnS which was excited through two‐photon absorption of radiation from a giant‐pulse ruby laser. The spectral width decreased from 75 to 12.8 Å above a threshold ruby‐laser power of 35 MW/cm2. Photographic pictures showed a beam divergence of less than 1°.Keywords
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