23 citations · 92 across the 11 of their papers we have counts for
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Cryogenic fiber-coupled electro-optic characterization platform for high-speed photodiodes
Shekhar Priyadarshi, Hao Tian, Alexander Fernandez Scarioni +5
We have developed a cryogenic characterization platform for ultrafast photodiodes, whose time domain responses are extracted by electro-optic sampling using femtosecond laser pulse…
Ultrafast magneto-photocurrents as probe of anisotropy relaxation in GaAs
Christian B. Schmidt, Shekhar Priyadarshi, Klaus Pierz +1
We induce ultrafast photocurrents in a GaAs crystal exposed to a magnetic field by optical femtosecond excitation. The magneto-photocurrents are studied by time-resolved detection…
Ultrafast magneto-photocurrents in GaAs: Separation of surface and bulk contributions
Christian B. Schmidt, Shekhar Priyadarshi, Sergey A. Tarasenko +1
We induce ultrafast magneto-photocurrents in a GaAs crystal employing interband excitation with femtosecond laser pulses at room temperature and non-invasively separate surface and…
THz beam steering by optical coherent control
Heiko Füser, Mark Bieler
We demonstrate optical coherent control of the emission direction of THz radiation. Femtosecond laser pulses are used to excite different types of ultrafast photocurrents along dif…
All-optically induced currents resulting from frequency modulated coherent polarization
Shekhar Priyadarshi, Klaus Pierz, Mark Bieler
We employ polarization-shaped ultrafast optical pulses to generate photocurrents which only arise if the optically induced coherent polarization is frequency modulated. This freque…
All-optically induced ultrafast photocurrents: Beyond the instantaneous coherent response
Shekhar Priyadarshi, Klaus Pierz, Mark Bieler
It is demonstrated that the non-instantaneous response of the optically induced coherent polarization tremendously influences the real-space shift of electronic charges in semicond…