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    • 4. 发明申请
    • HIGH-POWER MULTI-FUNCTION MILLIMETER-WAVE SIGNAL GENERATION USING OPO AND DFG
    • 用OPO和DFG生成大功率多功能毫米波信号
    • WO2014035843A2
    • 2014-03-06
    • PCT/US2013/056533
    • 2013-08-23
    • LOCKHEED MARTIN CORPORATION
    • HU, YongdanXING, AndrewHENDERSON, Angus
    • G02F1/35
    • G02F1/3534G02F1/0128G02F1/3501G02F1/353G02F1/3532G02F1/3551G02F1/39G02F2001/3503G02F2001/3507G02F2203/13H01S3/0078H01S3/0092H01S3/0675
    • 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 I P having pump-light frequency and generates two different lower intermediate frequencies of light - an OPO-signal beam I S and a spatially/temporally overlapping OPO-idler beam I I . 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 I P -beam, an II-beam-extraction mirror, and an IS-beam-extraction mirror, and a fifth I THz -beam-extraction mirror.
    • 在单腔中使用OPO和DFG生成高功率多功能毫米波(THz频率)信号的装置和方法。 在一些实施例中,OPO-DFG腔包括光学参量振荡器(OPO)非线性材料,其接收具有泵浦光频率的泵浦光I P,并且产生两个不同的较低中频光 - OPO信号光束I S和空间/时间重叠的OPO闲散光束I I。 差频发生器非线性材料然后接收两个中频光束II和IS,然后DFG产生具有等于两个中频之间的差的频率的THz频率输出信号。 在一些实施例中,非线性材料的单片晶体用于OPO和DFG功能。 一些实施例使用具有限定光路的四个镜子的领结环:IP-射束入射镜,去除未转换的I-P-beam的IP-光提取镜,II- 光束提取镜和IS-光束提取镜,以及第五个THz-光束提取镜。