Publications (6)
Measurement of quadratic Terahertz optical nonlinearities using second harmonic lock-in detection
Shuai Lin, Shukai Yu, Diyar Talbayev
We present a method to measure quadratic Terahertz optical nonlinearities in Terahertz time-domain spectroscopy. We use a rotating linear polarizer (a polarizing chopper) to modula…
Terahertz frequency magnetoelectric effect in Ni doped CaBaCoO
Shukai Yu, C. Dhanasekhar, Venimadhav Adyam +8
We present a study of terahertz frequency magnetoelectric effect in ferrimagnetic pyroelectric CaBaCoO and its Ni-doped variants. The terahertz absorption spectrum of these…
The role of spin fluctuations in the conductivity of CrO
Kate H. Heffernan, Shukai Yu, Skylar Deckoff-Jones +3
We present a time-resolved terahertz spectroscopic study of the half-metallic ferromagnet CrO. The ultrafast conductivity dynamics excited by an optical pump displays a very sh…
Beyond the effective mass approximation: predictive theory of the nonlinear optical response of conduction electrons
Shukai Yu, Kate H. Heffernan, Diyar Talbayev
We present an experimental and computational study of the nonlinear optical response of conduction electrons to intense terahertz (THz) electric field. Our observations (saturable…
High-temperature terahertz optical diode effect without magnetic order in polar FeZnMoO
Shukai Yu, Bin Gao, Jae Wook Kim +5
We present a terahertz spectroscopic study of polar ferrimagnet FeZnMoO. Our main finding is a giant high-temperature optical diode effect, or nonreciprocal directional dic…
Subterahertz collective dynamics of polar vortices
Qian Li, Vladimir A. Stoica, Marek PaÅciak +29
The collective dynamics of topological structures have been of great interest from both fundamental and applied perspectives. For example, the studies of dynamical properties of ma…