Electron paramagnetic resonance of Cr2+ and Cr4+ ions in CdGeAs2 crystals
Electron paramagnetic resonance (EPR) has been used to investigate chromium ions in single crystals of CdGeAs2 grown by the horizontal gradient freeze technique. Signals from Cr2+ and Cr4+ ions were o...
Electron paramagnetic resonance (EPR) has been used to investigate chromium ions in single crystals of CdGeAs2 grown by the horizontal gradient freeze technique. Signals from Cr2+ and Cr4+ ions were o...
Nitrogen-activated bowing of dilute InyGa1–yAs1–xNx based on photoreflectance studies
The dependence of the fundamental band gap and higher-lying critical-point energies of dilute-nitrogen Ga1–yInyAs1–xNx epilayers on nitrogen mole fraction (x), for x0.0125, and temperature, ...
The dependence of the fundamental band gap and higher-lying critical-point energies of dilute-nitrogen Ga1–yInyAs1–xNx epilayers on nitrogen mole fraction (x), for x0.0125, and temperature, ...
Acousto-optic response of nematic liquid crystals
J. Appl. Phys. 94, 7571 (2003); doi:10.1063/1.1628381
Issue Date: 15 December 2003
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The dependence of the acousto-optic response of two nematic liquid crystals on several possible future device parameters is investigated. Several paths for possible optimization are identified. A large enhancement of the acousto-optic response is obtained through optimization of the incident angle of the acoustic wave. The power required for a given cell to reach the maximum optical intensity is also reduced by adjusting the optical angle. This reduction comes at the expense of higher zero-field intensity, and therefore lowers the overall contrast. Finally, the acousto-optic response shows a significant dependence on liquid crystal layer thickness, scaling with the theoretically predicted fifth power of the cell thickness. ©2003 American Institute of Physics.
| History: | Received 3 July 2003; accepted 2 October 2003 |
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REFERENCES (11)
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