The nonlinear optical generation and detection of subpicosecond electrical pulses on coplanar transmission lines is demonstrated. The electrical pulses are generated by optical rectification of ultrashort optical pulses and detected by electro-optic sampling. Both processes are the result of a second-order nonlinear optical response that occurs in the same poled polymer medium. A bipolar temporal waveform with a FWHM duration of 180 fs for the positive lobe that was measured after a propagation distance of 125 μm was observed. Pulse broadening was minimized by careful attention to the device structure.
© 2001 Optical Society of America
(160.2100) Materials : Electro-optical materials
(160.5470) Materials : Polymers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena
Ajay Nahata, "Nonlinear optical generation and detection of ultrashort electrical pulses in transmission lines," Opt. Lett. 26, 385-387 (2001)