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- W2151321695 abstract "Abstract : Practical innovations for the far-infrared p-Ge laser were developed to enable commercial applications. New electrodynamic p-Ge laser designs were demonstrated, including an open semiconfocal cavity, dielectric SrTiO3 laser mirrors, and an electrically-controlled intra-cavity wavelength selector, which remarkably improve characteristics and reliability. These cavity designs also allow non-contact optical modulation of the laser gain by external near-infrared radiation, which may potentially replace high-power electrical modulation for generating picosecond far-infrared laser pulses. A new low-cost technique was developed to make uniform ohmic contacts for high-voltage excitation of the active crystal. Novel solid-state excitation electronics were tested as replacement for traditional vacuum-tube pulsers. A NdFeB permanent magnet assembly proved capable of providing the field necessary for laser oscillation. This test led to a next-generation SmCo magnet-assembly concept for replacing the traditional superconducting solenoid. A closed cycle refrigerator was shown to be an adequate replacement of liquid helium for cooling the laser crystal. Hence, a low-cost, all-solid-state, compact, turn-key, far-infrared laser featuring 1-4 THz tunability, waft peak powers, and pico-second pulse capability has been shown to be technically feasible. This laser will have applications in airborne and satellite communications, chemical sensing, and non-destructive testing." @default.
- W2151321695 created "2016-06-24" @default.
- W2151321695 creator A5035165477 @default.
- W2151321695 date "2001-01-01" @default.
- W2151321695 modified "2023-09-27" @default.
- W2151321695 title "Terahertz Devices: Tunable and Mode-Locked p-Ge THz Laser" @default.
- W2151321695 doi "https://doi.org/10.21236/ada388605" @default.
- W2151321695 hasPublicationYear "2001" @default.
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