Coherent light generators – Particular active media – Semiconductor
Patent
1994-03-18
1995-07-18
Bovernick, Rodney B.
Coherent light generators
Particular active media
Semiconductor
372 4, 372 41, 372 22, 372 25, H01S 3091, H01S 317, H01S 318, H01S 320
Patent
active
054348781
ABSTRACT:
An optical gain medium comprises a multi-phase system wherein: a first phase is an electromagnetic radiation emitting and amplifying phase (16) that is comprised of doped semiconductor nanocrystals; a second phase is an electromagnetic radiation scattering phase (14); and a third phase is a substantially transparent (at the wavelengths of interest) matrix phase (12). The emission phase may consist of ZnS nanoparticles that are doped with Mn.sup.2+, the scattering phase may comprise TiO.sub.2 or Al.sub.2 O.sub.3 nanoparticles, and the matrix phase may comprise a glass or polymer body, layer or coating. At least one dimension of a body, layer, or coating comprised of the gain medium may be less than a scattering length associated with the scattering phase.
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Bovernick Rodney B.
Brown University Research Foundation
McNutt Robert
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