Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 128, Issue 8, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-022-07859-y
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Funding
- National Natural Science Foundation of China [12074222, 61775122]
- Key Technology Research and Development Program of Shandong Province [2019JMRH0111]
- Natural Science Foundation of Shandong Province [ZR2017MF038]
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In this paper, a tunable ring cavity terahertz parametric oscillator with fixed output direction is presented. The diamond-shaped Stokes beam resonator and reflection mirrors are used to adjust the propagation direction of the Stokes and pump beams, respectively. By controlling the cooperative propagation directions of the pump and Stokes beams, the terahertz wave output direction can always be normal to the output surface within the frequency tuning range of 1.4-2.4 THz.
A tunable ring cavity terahertz parametric oscillator with fixed output direction is reported in this paper. The diamond-shaped Stokes beam resonator was designed for the adjustment of the Stokes beam propagation direction while the propagation direction of pump beam was adjusted by two reflection mirrors. The terahertz wave output direction can be always normal to the output surface by controlling the propagation directions of the pump and Stokes beams cooperatively during the frequency tuning in the range of 1.4-2.4 THz.
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