We describe the generation of subpicosecond electrical pulses by optical rectification of ultrashort optical pulses. The electrical pulses are generated by the second-order nonlinear response of a LiTaO3 crystal bonded to a coplanar transmission line. A bipolar temporal waveform with a width of 875 fs was measured after a propagation distance of 175μm . This pulse width was limited by the response time of the photoconductive sampler. We observed both broadening and amplitude reduction in the temporal waveform owing to propagation.
© 1998 Optical Society of America
Ajay Nahata and Tony F. Heinz, "Generation of subpicosecond electrical pulses by optical rectification," Opt. Lett. 23, 867-869 (1998)