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

    Authors

    E. W. Nelson; S. H. Withers; A. V. Muravjov; R. C. Strijbos; R. E. Peale; S. G. Pavlov; V. N. Shastin;C. J. Fredricksen

    Abbreviated Journal Title

    IEEE J. Quantum Electron.

    Keywords

    laser modes; laser tuning; submillimeter wave lasers; submillimeter wave; resonators; submillimeter wave spectroscopy; submillimeter wave; technology; HOT-HOLE LASER; MODE SELECTION; SPECTROSCOPY; GERMANIUM; LOCKING; Engineering, Electrical & Electronic; Optics; Physics, Applied

    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-inulating 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.

    Journal Title

    Ieee Journal of Quantum Electronics

    Volume

    37

    Issue/Number

    12

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    1525

    Last Page

    1530

    WOS Identifier

    WOS:000172727900007

    ISSN

    0018-9197

    Share

    COinS