Theory of effect of near-infrared laser polarization direction on high-order terahertz sideband generation in semiconductors

H Liu, W She - Optics Express, 2015 - opg.optica.org
In a semiconductor illuminated by a strong terahertz (THz) field, the electron–hole pairs
excited by linear polarized near-infrared (NIR) laser can recombine to emit high-order THz …

Phase-matching and peak nonlinearity enhanced third-harmonic generation in graphene plasmonic coupler

T Wu, Y Luo, SA Maier, L Wei - Physical Review Applied, 2019 - APS
Strong nonlinear optical effects generally require giant optical fields interacting with the
nonlinear media. Doped graphene hosts electrically tunable plasmons with long lifetimes …

Theory of low-power ultra-broadband terahertz sideband generation in bi-layer graphene

JA Crosse, X Xu, MS Sherwin, RB Liu - Nature communications, 2014 - nature.com
In a semiconductor illuminated by a strong terahertz (THz) field, optically excited electron–
hole pairs can recombine to emit light in a broad frequency comb evenly spaced by twice the …

Terahertz pulse induced intervalley scattering in photoexcited GaAs

FH Su, F Blanchard, G Sharma, L Razzari… - Optics express, 2009 - opg.optica.org
Nonlinear transient absorption bleaching of intense few-cycle terahertz (THz) pulses is
observed in photoexcited GaAs using opticalpump–THz-probe techniques. A simple model …

Widely-tunable, monochromatic, and high-power terahertz sources and their applications

YJ Ding, W Shi - Journal of Nonlinear Optical Physics & Materials, 2003 - World Scientific
We have demonstrated that coherent terahertz (THz) waves can be efficiently generated and
tuned in extremely-wide ranges based on phase-matched difference-frequency generation …

Terahertz radiation enhancement in gallium arsenide nano-hole array under low power optical pump

K Wang, Y Gu, Y Lu, J Gu, W Zhang - Applied Physics Letters, 2022 - pubs.aip.org
Though accelerating photocarriers by the semiconductor surface electric field is the simplest
way to generate broadband terahertz pulses, the weak THz power under low optical pump …

Enhanced third harmonic generation with graphene metasurfaces

B Jin, T Guo, C Argyropoulos - Journal of Optics, 2017 - iopscience.iop.org
The nonlinear responses of different materials provide useful mechanisms for optical
switching, low noise amplification, and harmonic frequency generation. However, the …

Nonlinear optical phenomena induced by intense single-cycle terahertz pulses

H Hirori, K Tanaka - IEEE Journal of Selected Topics in …, 2012 - ieeexplore.ieee.org
Recent developments in high-power table-top terahertz (THz) pulse sources enable us to
coherently drive low-energy transitions into the nonlinear regime and to study fascinating …

Second harmonic generation in graphene dressed by a strong terahertz field

M Tokman, SB Bodrov, YA Sergeev, AI Korytin… - Physical Review B, 2019 - APS
We observe enhanced second harmonic generation in monolayer graphene in the presence
of an ultrastrong terahertz field pulse of picosecond duration with a peak amplitude of 250 …

Cascaded terahertz-wave generation efficiency in excess of the Manley–Rowe limit using a cavity phase-matched optical parametric oscillator

K Saito, T Tanabe, Y Oyama - JOSA B, 2015 - opg.optica.org
We describe a scheme for efficient terahertz (THz) generation using a cascaded optical
parametric oscillator using a GaP sheet cavity. By choosing an appropriate pump …