Design of a terahertz parametric oscillator based on a resonant cavity in a terahertz waveguide

Journal Article · Mon Jul 28 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4891838· OSTI ID:22308511

Oyama, Y. ^[1]; Tanabe, T. ^[2]

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1. Department of Materials Science, Graduate School of Engineering, Tohoku University, 6-6-11-1021, Aoba-ku, 980-8579 Sendai (Japan)
2. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1, Katahira, Aoba-ku, 980-8577 Sendai (Japan)

We demonstrate ns-pulsed pumping of terahertz (THz) parametric oscillations in a quasi-triply resonant cavity in a THz waveguide. The THz waves, down converted through parametric interactions between the pump and signal waves at telecom frequencies, are confined to a GaP single mode ridge waveguide. By combining the THz waveguide with a quasi-triply resonant cavity, the nonlinear interactions can be enhanced. A low threshold pump intensity for parametric oscillations can be achieved in the cavity waveguide. The THz output power can be maximized by optimizing the quality factors of the cavity so that an optical to THz photon conversion efficiency, η{sub p}, of 0.35, which is near the quantum-limit level, can be attained. The proposed THz optical parametric oscillator can be utilized as an efficient and monochromatic THz source.

• OSTI ID: 22308511
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 4 Vol. 116; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAVITY RESONATORS
CONVERSION
DESIGN
EFFICIENCY
GALLIUM PHOSPHIDES
INTERACTIONS
MONOCHROMATIC RADIATION
NONLINEAR PROBLEMS
OPTICAL PUMPING
OPTIMIZATION
OSCILLATIONS
PARAMETRIC OSCILLATORS
PHOTONS
PULSES
QUALITY FACTOR
THZ RANGE
WAVEGUIDES