Individual Concave Twin ZnO Microdisk with Optical Resonance

2021 ◽  
Author(s):  
Yumin Chen ◽  
Zhen Liu ◽  
Xiaohui Qiu ◽  
Xinfeng Liu
Keyword(s):  
High Energy ◽  
Optical Resonance ◽  
Fabry Perot

We synthesized concave twin ZnO microdisks, whose outer surfaces are entirely enclosed by high-energy facets. Different from hexagonal planar WGM microdisks, individual concave twin ZnO microdisk shows Fabry-Pérot resonances and...

Optical Characterization of Iv-VI Mid-Infrared Vcsel

2001 ◽  
Vol 692 ◽  
Author(s):  
F. Zhao ◽  
H. Wu ◽  
T. Zheng ◽  
P. J. McCann ◽  
A. Majumdar ◽  
...  
Keyword(s):  
Room Temperature ◽  
Multiple Quantum Well ◽  
High Energy ◽  
Cavity Surface ◽  
Temperature Threshold ◽  
Multiple Quantum ◽  
Fabry Perot ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Increasing Temperature

AbstractPbSe/PbSrSe multiple-quantum-well (MQW) structures and PbSrSe thin films were grown on BaF2 (111) substrates by molecular beam epitaxy (MBE) and characterized by Fourier transform infrared (FTIR) spectrometer. Strong photoluminescence without Fabry-Perot interference fringes was observed even at room temperature from the MQW structures. The peak energies for the MQW structures with different well widths shifted to high energy with increasing temperature. The absorption edge of PbSrSe layer was determined by transmission spectra. Meanwhile, we designed and fabricated λ=4.1 μm MQW vertical cavity surface emitting laser (VCSEL). A power output of 40 mW was obtained at room temperature. The room temperature threshold pump density is 200 kW/cm2.

High Energy Optical Resonance Transfer Laser Study

1979 ◽  
Author(s):  
P. Baily ◽  
J. Finzi ◽  
G. Holleman ◽  
K. Hui ◽  
J. Wang
Keyword(s):  
High Energy ◽  
Optical Resonance ◽  
Resonance Transfer

Simulations of photothermal effects and thermodynamics induced by optical resonance in a fiber metallic Fabry–Perot cavity

2020 ◽  
Vol 59 (22) ◽  
pp. 6466
Author(s):  
Pengfei Hao ◽  
Min Li ◽  
Xiaoyan Wen ◽  
Ho-Pui Ho ◽  
Haifei Lu
Keyword(s):  
Optical Resonance ◽  
Fabry Perot ◽  
Photothermal Effects

scholarly journals Information-Measuring Complex to Detect High Frequency Gravitational Waves

2021 ◽  
pp. 13-23
Author(s):  
I. S. Golyak ◽  
A. N. Morozov ◽  
A. L. Nazolin ◽  
S. E. Tabalin ◽  
A. A. Esakov ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Gravitational Waves ◽  
High Frequency ◽  
Low Frequency ◽  
Optical Resonators ◽  
Integer Number ◽  
Optical Scheme ◽  
Gravitational Antenna ◽  
Optical Resonance ◽  
Fabry Perot

The gravitational waves predicted by the general theory of relativity and detected by the Laser Interferometer Gravitational-wave Observatory (LIGO) have typical frequencies in the range of 30 ... 300 Hz. Current theories of gravity predict the existence of high-frequency gravitational waves with frequencies of 10 ... 100 MHz, including those of cosmological origin, induced by quantum fluctuations of the scalar field at the stage of cosmological inflation in the early Universe.Multi-beam optical resonators, in particular the Fabry-Perot interferometers, can be used to detect high-frequency gravitational waves. When using multi-beam optical resonators, it is possible to use the phenomenon of low-frequency optical resonance, which allows us to have a selective response to the gravitational wave effect. The gravitational-optical resonance in a multi-beam interferometer occurs if the condition is fulfilled that an integer number of half-waves of gravitational radiation is along the length of the resonator.The use of a multi-beam interferometer to detect high-frequency gravitational waves does not require the creation of a complex system for decoupling mirrors used for gravitational antennas operating in the low-frequency part of the spectrum. This is due to the fact that the frequency of mechanical vibrations of the interferometer mirrors is significantly less than the frequency of the gravitational wave.The paper considers possible optical schemes of a high-frequency gravitational antenna: based on the traditional Michelson interferometer, in the arms of which two Fabry-Perot interferometers are available, and on the basis of the Mach-Zehnder optical scheme, where Fabry-Perot interferometers can be made in the form of two perpendicular arms, with reflecting mirrors at the bend of the beam. The advantage of the second scheme is that three photo-detectors, one being main and two others being auxiliary, can be used, and there is a possibility to detect radiation transmitted by Fabry-Perot interferometers.To prove that detection of high-frequency gravitational waves is possible, a potential sensitivity of the high-frequency gravitational antenna has been estimated in the paper.

scholarly journals An Integral View of Balmer-dominated Shocks in Supernova Remnants

2013 ◽  
Vol 9 (S296) ◽  
pp. 165-169
Author(s):  
Sladjana Nikolić ◽  
Glenn van de Ven ◽  
Kevin Heng ◽  
Daniel Kupko ◽  
Jose Alfonso Lopez Aguerri ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
Supernova Remnant ◽  
Narrow Band ◽  
High Energy ◽  
Tunable Filter ◽  
Atomic Scale ◽  
High Energy Cosmic Rays ◽  
Seed Particles ◽  
Fabry Perot ◽  
Integral Field

AbstractWe present integral-field spectroscopic observations with the VIMOS-IFU at the VLT of fast (2000-3000 kms−1) Balmer-dominated shocks surrounding the northwestern rim of the remnant of supernova 1006. The high spatial and spectral resolution of the instrument enable us to show that the physical characteristics of the shocks exhibit a strong spatial variation over few atomic scale lengths across 133 sky locations. Our results point to the presence of a population of non-thermal protons (10-100 keV) which might well be the seed particles for generating high-energy cosmic rays. We also present observations of Tycho's supernova remnant taken with the narrow-band tunable filter imager OSIRIS at the GTC and the Fabry-Perot interferometer GHaFaS at the WHT to resolve respectively the broad and narrow Hα lines across a large part of the remnant.

scholarly journals Mathematical modeling of heating of a dimetallic plate by a high-energy concentrated radiation flux

2018 ◽  
Vol 194 ◽  
pp. 01046
Author(s):  
Mikhail Purin ◽  
Ekaterina Zakharova
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Critical Concentration ◽  
Optical Breakdown ◽  
Laser Action ◽  
Melting Process ◽  
High Energy ◽  
Wall Region ◽  
Optical Resonance ◽  
Metal Melts

Mathematical modeling of heat transfer processes proceeding together under conditions of intense phase transformations (melting and evaporation of metals) under laser action on a dimetallic target has been carried out. Based on the results of numerical simulation, it is established that the laser power exerts a significant influence on the dynamics of the melting process. It is shown that evaporation of metal in the boundary layer of the plate can also have a significant effect on the heat transfer characteristics. It is established that metal vapors forming a gas mixture in the near-wall region can absorb laser radiation and cause the phenomenon of optical resonance with increasing their critical concentration, in other words, when the metal melts, optical breakdown is possible.

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