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Sub-cycle Optical Control of Current in a Semiconductor: from the Multiphoton to the Tunneling Regime by Paasch-Colberg, Tim; Kruchinin, Stanislav Yu.; Sağlam, Özge; Kapser, Stefan; Cabrini, Stefano; Muehlbrandt, Sascha; Reichert, Joachim; Barth, Johannes V.; Ernstorfer, Ralph; Kienberger, Reinhard; Yakovlev, Vladislav S.; Karpowicz, Nicholas; Schiffrin, Agustin is a scholarly article available to read on EtoBox.

What is Sub-cycle Optical Control of Current in a Semiconductor: from the Multiphoton to the Tunneling Regime about?

Nonlinear interactions between ultrashort optical waveforms and solids can be used to induce and steer electric current on a femtosecond (fs) timescale, holding promise for electronic signal processing at PHz frequencies [Nature 493, 70 (2013)]. So far, this approach has been limited to insulators, requiring extremely strong peak electric fields and intensities. Here, we show all-optical generation and control of directly measurable electric current in a semiconductor relevant for high-speed and high-power (opto)electronics, gallium nitride (GaN), within an optical cycle and on a timescale shorter than 2 fs, at intensities at least an order of magnitude lower than those required for dielectrics. Our approach opens the door to PHz electronics and metrology, applicable to low-power (non-amplified) laser pulses, and may lead to future applications in semiconductor and photonic integrated circuit technologies.

Author

Paasch-Colberg, Tim; Kruchinin, Stanislav Yu.; Sağlam, Özge; Kapser, Stefan; Cabrini, Stefano; Muehlbrandt, Sascha; Reichert, Joachim; Barth, Johannes V.; Ernstorfer, Ralph; Kienberger, Reinhard; Yakovlev, Vladislav S.; Karpowicz, Nicholas; Schiffrin, Agustin

Published

2016

Language

EN