Supercontinuum generation from 2 to 20  μm in GaAs pumped by picosecond CO2 laser pulses

JJ Pigeon, SY Tochitsky, C Gong, C Joshi - Optics letters, 2014 - opg.optica.org
We report on the generation of supercontinuum radiation from 2 to 20 μm in a 67 mm long
GaAs crystal pumped by a train of 3 ps CO_2 laser pulses. Temporal measurements indicate …

Determination of thermal damage threshold in THz photomixers using Raman spectroscopy

M Mikulics, R Adam, G Chen, D Chakraborty, J Cheng… - Crystals, 2023 - mdpi.com
The increase of device lifetime and reliability of THz photomixers will play an essential role
in their possible future application. Therefore, their optimal work conditions/operation range …

High-power, mid-infrared, picosecond pulses generated by compression of a CO2 laser beat-wave in GaAs

JJ Pigeon, SY Tochitsky, C Joshi - Optics letters, 2015 - opg.optica.org
We report on the generation of a train of∼ 2 ps, 10 μm laser pulses via multiple four-wave
mixing and compression of an infrared laser beat-wave propagating in the negative group …

Observing visible-range photoluminescence in GaAs nanowires modified by laser irradiation

PA Alekseev, MS Dunaevskiy, DA Kirilenko… - Journal of Applied …, 2017 - pubs.aip.org
We study the structural and chemical transformations induced by focused laser beam in
GaAs nanowires with an axial zinc-blende/wurtzite (ZB/WZ) heterostructure. The …

Imaging of surface acoustic waves on GaAs using 2D confocal Raman microscopy and atomic force microscopy

BD Rummel, L Miroshnik, M Patriotis, A Li… - Applied Physics …, 2021 - pubs.aip.org
Surface acoustic wave devices have been fabricated on a GaAs 100 substrate to
demonstrate the capability of 2D Raman microscopy as an imaging technique for acoustic …

Laser generation and amplification of TE and TM modes in a semiconductor optical GaAs waveguide with distributed feedback generated by a space charge wave

I Panyaev, I Zolotovskii, D Sannikov - Optics Communications, 2020 - Elsevier
We propose a scheme for generating and amplifying coupled optical TE and TM waves in
the mid-IR range provided by a grating formed by a space charge wave in a planar …

Temperature-dependent Raman scattering in N–In codoped p-type ZnO thin films

JF Kong, HB Ye, DM Zhang, WZ Shen… - Journal of Physics D …, 2007 - iopscience.iop.org
We have carried out a detailed temperature-dependent Raman scattering investigation on
coupled longitudinal–optical phonon–plasmon modes in N–In codoped p-type ZnO thin films …

Record high-aspect-ratio GaAs nano-grating lines grown by Hydride Vapor Phase Epitaxy (HVPE)

E Gil, Y André, MR Ramdani, C Fontaine… - Journal of crystal …, 2013 - Elsevier
Nanometric-width GaAs grating lines showing high aspect (height/width) ratio of up to 30,
without roughness or shape deviation are reported. They were obtained by HVPE …

Confined synthesis and interlayer coupling of patterned graphene ribbons arrays

X Xiong, C Ning, Y Jin, D Li, Q Yang, X Gong, C Cheng… - Carbon, 2022 - Elsevier
To prepare patterned graphene ribbons with fixed directions and positions can promote the
applications of graphene in optoelectronic devices. The templated chemical vapor …

Phase transition temperature of SrTiO3 ultrathin films: An annealing study by ultraviolet Raman spectroscopy

AB Shi, WZ Shen, H Wu - Applied Physics Letters, 2007 - pubs.aip.org
The authors present a detailed investigation of paraferroelectric phase transition
temperature (TC) of Sr Ti O 3 ultrathin films grown by molecular beam epitaxy on Si …