High-resolution study of composite cavity effects for p-Ge lasers
Abbreviated Journal Title
IEEE J. Quantum Electron.
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
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.
Ieee Journal of Quantum Electronics
"High-resolution study of composite cavity effects for p-Ge lasers" (2001). Faculty Bibliography 2000s. 8146.