Submillimeter p-Ge laser using a Voigt-configured permanent magnet

Park, K.; Peale, Robert E.; Weidner, H.; Kim, J.J.

doi:10.1109/3.517020

Cited by 30 publications

(11 citation statements)

References 23 publications

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“…In contrast, the intersubband p-Ge laser with a tunable intracavity frequency selector can generate emission of a single longitudinal mode [5], which has megahertz line width. Moreover, such tuning elements can be electrically controlled [6], and this mode of operation allows the use of uncooled permanent magnet assemblies [19].…”

Section: Discussionmentioning

confidence: 99%

High-resolution study of composite cavity effects for p-Ge lasers

Nelson

Withers

Muravjov

et al. 2001

IEEE J. Quantum Electron.

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Abstract-The temporal dynamics, spectrum, and gain of the far-infrared p-Ge laser for composite cavities consisting of an active crystal and passive transparent elements have been studied with high temporal and spectral resolution. Results are relevant to improving the performance of mode-locked or tunable p-Ge lasers using intracavity modulators or wavelength selectors, respectively. It is shown that an interface between the active p-Ge crystal and a passive intracavity spacer causes partial frequency selection of the laser modes, characterized by a modulation of their relative intensities. Nevertheless, the longitudinal mode frequencies are determined by the entire optical length of the cavity and not by resonance frequencies of intracavity sub-components. Operation of the p-Ge laser with multiple interfaces between Ge, Si, and semi-insulating GaAs elements, or a gap, is demonstrated as a first step toward a p-Ge laser with an external quasioptical cavity and distributed active media.Index Terms-Laser modes, laser tuning, submillimeter wave lasers, submillimeter wave resonators, submillimeter wave spectroscopy, submillimeter wave technology.

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Section: Discussionmentioning

confidence: 99%

High-resolution study of composite cavity effects for p-Ge lasers

Nelson

Withers

Muravjov

et al. 2001

IEEE J. Quantum Electron.

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“…Such effects might be minimized by orienting the active crystal at Brewster's angle. This would require Voigt configuration of the applied fields [11], where the emission is perpendicular to the magnetic field, to avoid polarization rotation by the Faraday effect.…”

Section: Discussionmentioning

confidence: 99%

Far-infrared p-Ge laser with variable length cavity

Muravjov

Nelson

Peale

et al. 2003

Infrared Physics & Technology

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“…The variable field allows tuning over a wider range of laser emission wavelengths than would a permanent magnet assembly. The magnet shown is the same used for the first p-Ge laser in the United States [1]. A special cold plate with cold finger for the Ge crystal was built (Fig.…”

Section: Security Classification Of Reportmentioning

confidence: 99%

Widely Tunable and High-Duty Terahertz p-Ge Laser in a Closed-Cycle Refrigerator

Peale¹

2002

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Public reporting burden for tNs collection of Infonnation is estimated to average 1 hour per response, Includrng the time for rfviO'jAfgTnstnjctions, searcNng y the coHactlon of information. The R&D objectives of this project are to increase the duty cycle and operation temperature of the far-JR p-Ge laser, to design and test a tunable frequency-stabilized laser for THz sensing and spectroscopy, and to obtain cryogen-free operation. All grant funds were allocated for the purchase of a state-of-the-an closed-cycle refrigerator system to be used in attaining the objectives. Support for other research expenses and salaries comes from the National Science Foundation and subcontracts on Zaubertek SBIR/STTR projects. The R&D objectives of this project are to increase the duty cycle and operation temperature of the far-IR p-Ge laser, to design and test a tunable frequency-stabilized laser for THz sensing and spectroscopy, and to obtain cryogen-free operation. All grant funds were allocated for the purchase of a state-of-the-art closed-cycle refrigerator system to be used in attaining the objectives. Support for other research expenses and salaries comes from the National Science Foundation and subcontracts on Zaubertek SBIR/STTR projects.

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Submillimeter p-Ge laser using a Voigt-configured permanent magnet

Cited by 30 publications

References 23 publications

High-resolution study of composite cavity effects for p-Ge lasers

High-resolution study of composite cavity effects for p-Ge lasers

Far-infrared p-Ge laser with variable length cavity

Widely Tunable and High-Duty Terahertz p-Ge Laser in a Closed-Cycle Refrigerator

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