| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Chalcogenides and Chalcopyrites; Growth of Multinary Cystals and Glasses for Lasers and Hyperspectral Imagers |
| Author(s) |
Narsingh Bahadur Singh, Ian Emge, Pooja Gautam, Krishna S. Machuga, Fow-Sen Choa, Bradley Arnold, Lisa Kelly, Brian Cullum, Raghaw Rai |
| On-Site Speaker (Planned) |
Narsingh Bahadur Singh |
| Abstract Scope |
Chalcogenide and chalcopyrite crystals and glasses have played an important role in frequency conversion (nonlinear optical NLO) and imaging applications covering visible, near–infrared wavelength, mid wave infrared (MWIR), longwave wave infrared (LWIR) and even up to Tera hertz regions. Availability of a single material to meet requirement of transparency, NLO coefficient, low absorption coefficient and power handling capability has been major unknown factors. For high power lasers using optical parametric oscillation (OPO) approach low absorption is required at the pump and signal wavelengths. A similar criterion applies for second, third and higher order harmonic generation spite of more than four decades of investments and promises on variety of phosphides and arsenides, there is no single multifunctional material which can meet these challenges. To overcome these problems, we have designed and investigated several thallium, silver and gallium based binary, ternary and quaternary chalcogenides with unusual properties for lasers and imagers. |