Title

High-Resolution Study Of Composite Cavity Effects For P-Ge Lasers

Keywords

Laser modes; Laser tuning; Submillimeter wave lasers; Submillimeter wave resonators; Submillimeter wave spectroscopy; Submillimeter wave technology

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.

Publication Date

12-1-2001

Publication Title

IEEE Journal of Quantum Electronics

Volume

37

Issue

12

Number of Pages

1525-1530

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/3.970898

Socpus ID

0035686649 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0035686649

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