Electro-optic transceivers for terahertz-wave applications
Because of the reciprocal behavior of the optical rectification and the electro-optic effect in a nonlinear optical crystal, an electro-optic transceiver can alternately transmit pulsed electromagnetic radiation (optical rectification) and detect the return signal (electro-optic effect) in the same crystal. However, the optimal condition of the electro-optic transceiver may be very different from that of the spatially separated emitter and receiver. We present a detailed description of the crystal-orientation dependence of the electro-optic terahertz devices (transmitter, receiver, and transceiver). It is found that for a (110) zinc-blende electro-optical crystal, the efficiency of the electro-optic transceiver will be optimized when the angle between the polarization of the optical pump beam and the crystallographic z axis [0,0,1] is 26{degree}. Meanwhile, for a (111) crystal, the angle between the optical beam and the crystallographic direction [{minus}1,{minus}1,2] should be 23{degree}. The experimental results from a (110) ZnTe transceiver verify theoretical calculations and demonstrate a direct way to optimize the working efficiency of an electro-optic terahertz transceiver. {copyright} 2001 Optical Society of America
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40203228
- Journal Information:
- Journal of the Optical Society of America B, Journal Name: Journal of the Optical Society of America B Journal Issue: 6 Vol. 18; ISSN 0740-3224
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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