Invention Grant
US09588398B2 Gigahertz to terahertz frequency signal generation using OPO and DFG
有权
使用OPO和DFG的千兆赫到太赫兹频率信号生成
- Patent Title: Gigahertz to terahertz frequency signal generation using OPO and DFG
- Patent Title (中): 使用OPO和DFG的千兆赫到太赫兹频率信号生成
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Application No.: US14740257Application Date: 2015-06-16
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Publication No.: US09588398B2Publication Date: 2017-03-07
- Inventor: Yongdan Hu , Andrew Xing , Angus J. Henderson
- Applicant: Lockheed Martin Corporation
- Applicant Address: US MD Bethesda
- Assignee: Lockheed Martin Corporation
- Current Assignee: Lockheed Martin Corporation
- Current Assignee Address: US MD Bethesda
- Agency: Lemaire Patent Law Firm, P.L.L.C.
- Agent Charles A. Lemaire; Jonathan M. Rixen
- Main IPC: G02F1/35
- IPC: G02F1/35 ; H01S3/00 ; G02F1/39 ; G02F1/01 ; G02F1/355

Abstract:
Apparatus and method for high-power multi-function millimeter-wavelength (THz-frequency) signal generation using OPO and DFG in a single cavity. In some embodiments, the OPO-DFG cavity includes an optical parametric oscillator (OPO) non-linear material that receives pump light IP having pump-light frequency and generates two different lower intermediate frequencies of light—an OPO-signal beam IS and a spatially/temporally overlapping OPO-idler beam II. A difference-frequency generator non-linear material then receives the two intermediate-frequency beams II and IS, and the DFG then generates a THz-frequency output signal that has a frequency equal to the difference between the two intermediate frequencies. In some embodiments, a single-piece crystal of non-linear material is used for both OPO and DFG functions. Some embodiments use a bow-tie ring having four mirrors that define the optical path: an IP-beam-entry mirror, an IP-light-extraction mirror to remove unconverted IP-beam, an II-beam-extraction mirror, and an IS-beam-extraction mirror, and a fifth ITHz-beam-extraction mirror.
Public/Granted literature
- US20150288127A1 GIGAHERTZ TO TERAHERTZ FREQUENCY SIGNAL GENERATION USING OPO AND DFG Public/Granted day:2015-10-08
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