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CAS IR Grid
机构
长春光学精密机械与物... [2]
半导体研究所 [2]
福建物质结构研究所 [1]
化学研究所 [1]
过程工程研究所 [1]
高能物理研究所 [1]
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期刊论文 [7]
会议论文 [2]
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2021 [1]
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半导体材料 [1]
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Influence of lithium and silicon coatings on tungsten erosion in arc plasma
期刊论文
OAI收割
JOURNAL OF NUCLEAR MATERIALS, 2021, 卷号: 555
作者:
Tang, Z. L.
;
Zuo, G. Z.
;
Li, C. L.
;
Huang, M.
;
Zhang, X. B.
  |  
收藏
  |  
浏览/下载:62/0
  |  
提交时间:2021/09/06
Arc erosion
Mitigation
Tungsten
Lithium coating
Silicon coating
Optical emission spectrum
Constraining the X-Ray-Infrared Spectral Index of Second-timescale Flares from SGR 1935+2154 with Palomar Gattini-IR
期刊论文
OAI收割
The Astrophysical Journal, 2020, 卷号: 901, 页码: L7
作者:
HXMT
  |  
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2022/02/08
Radio transient sources
Magnetars
Soft gamma-ray repeaters
2008
992
1471
Astrophysics - High Energy Astrophysical Phenomena
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Galactic magnetar SGR 1935+2154 has been reported to produce the first example of a bright millisecond-duration radio burst (FRB 200428) similar to the cosmological population of fast radio bursts (FRBs). The detection of a coincident bright X-ray burst represents the first observed multiwavelength counterpart of an FRB. However, the search for similar emission at optical wavelengths has been hampered by the high inferred extinction on the line of sight. Here, we present results from the first search for second-timescale emission from the source at near-infrared (NIR) wavelengths using the Palomar Gattini-IR observing system in the J band, enabled by a novel detector readout mode that allows short exposure times of ?0.84 s with 99.9% observing efficiency. With a total observing time of ?12 hr (?47,728 images) during its 2020 outburst, we place median 3Ҡlimits on the second-timescale NIR fluence of ?18 Jy ms (13.1 AB mag). The corresponding extinction-corrected limit is ?125 Jy ms for an estimated extinction of A
J
= 2.0 mag. Our observations were sensitive enough to easily detect an NIR counterpart of FRB 200428 if the NIR emission falls on the same power law as observed across its radio to X-ray spectrum. We report nondetection limits from epochs of four simultaneous X-ray bursts detected by the Insight-HXMT and NuSTAR telescopes during our observations. These limits provide the most stringent constraints to date on fluence of flares at 10
14
Hz, and constrain the fluence ratio of the NIR emission to coincident X-ray bursts to R
NIR
? 0.025 (fluence index ?0.35).
Distinct Excitonic Circular Dichroism between Wurtzite and Zincblende CdSe Nanoplatelets
期刊论文
OAI收割
NANO LETTERS, 2018, 卷号: 18, 期号: 11, 页码: 6665
作者:
Gao, XQ
;
Zhang, XW
;
Zhao, LY
;
Huang, P
;
Han, B
  |  
收藏
  |  
浏览/下载:55/0
  |  
提交时间:2018/12/29
Circular Dichroism Spectrum
Quantum Dots
Optical Activity
2-photon Absorption
Cdse Nanoplatelets
Amino-acids
Wurtzite
Chirality
Zincblende
Nanoparticles
Excitonic Transition
Nanocrystals
Biomolecules
Recognition
Dependence
Emission
Broadband tunable external cavity laser using a bent-waveguide quantum-dot superluminescent diode as gain device
期刊论文
OAI收割
chinese physics b, 2011, 卷号: 20, 期号: 6, 页码: art. no. 064202
作者:
Jin P
收藏
  |  
浏览/下载:54/4
  |  
提交时间:2011/07/15
LIGHT-EMITTING-DIODES
OPTICAL-PROPERTIES
TUNING RANGE
NM
EMISSION
SPECTRUM
SPECTROSCOPY
Thermal and polarised spectral properties of Nd3+ doped Li3Ba2Y3(MoO4) crystal
期刊论文
OAI收割
Materials Research Innovations, 2010, 卷号: 14, 期号: 3, 页码: 216-219
M. J. Song, L. Z. Zhang and G. F. Wang
收藏
  |  
浏览/下载:19/0
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提交时间:2012/11/02
Nd3+:Li3Ba2Y3(MoO4)(8) crystal
Thermal expansion
Specific heat
Absorption spectrum
Emission spectrum
Laser crystal
optical-transition probability
rare-earth ions
spectroscopic
properties
sr3gd2(bo3)(4) crystal
single-crystals
growth
luminescence
intensities
glasses
nd-yvo4
Temperature characteristics of high power vertical cavity surface emitting lasers (EI CONFERENCE)
会议论文
OAI收割
Semiconductor Lasers and Applications III, November 12, 2007 - November 13, 2007, Beijing, China
作者:
Qin L.
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2013/03/25
By using oxidation confinement technology high power vertical-cavity surface-emitting lasers are fabricated in experiment. The electrical and optical performance characteristics such as threshold current
efficiency
emission wavelength
and output power are measured under continuous wave (CW) condition at room temperature. The maximum output power is up to watt regime at wavelength of about 980nm. The temperature characteristics of the device are investigated experimentally in detail. The variation in lasing threshold current with temperature is studied. The characteristic temperature T0 of the device is derived
and the value is about 211K. Such a high characteristic temperature T0 of threshold current can lead to good temperature sensitivity of the device. At the same time
the lasing spectrum characteristics with temperature are also measured. The wavelength shift with temperature is just about 0.06nm/K. From the measured results
it is shown that the device can still operate at high temperature condition.
Spectroscopic investigations of Er3+ doped Bi2O 3 -B2O3 -SiO2 glass (EI CONFERENCE)
会议论文
OAI收割
ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Chen B.
;
Wang X.
;
Wang X.
;
Wang X.
;
Wang C.
收藏
  |  
浏览/下载:79/0
  |  
提交时间:2013/03/25
From the optical absorption measurements
the Judd-Ofelt parameters were computed using Judd-Ofelt theory. According to the radiative lifetime obtained from the Judd-Ofelt parameters and the measured lifetime
the 1.5m quantum efficiency was calculated. The quenching effect of OH upon the lifetime of 1.5m emission was investigated. From the absorption sideband measurement of glass host
the value of optical band gap was estimated. The McCumber theory was used to calculate the stimulated emission cross-section and in approximate agreement with experimental one if the emission spectrum could be obtained accurately. The gain coefficient spectra were computed.
A novel chiral conjugated polymer whose chiral property has different responses with different metal ions
期刊论文
OAI收割
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE, 2004, 卷号: 25, 期号: 1, 页码: 194-196
作者:
Bian, Z
;
He, YB
;
Gao, LX
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收藏
  |  
浏览/下载:25/0
  |  
提交时间:2019/04/09
Chirality
Bipyridyl
Absorption Spectrum
Emission Spectrum
Optical Rotation
Measurement of gain spectrum for Fabry-Perot semiconductor lasers by the Fourier transform method with a deconvolution process
期刊论文
OAI收割
ieee journal of quantum electronics, 2003, 卷号: 39, 期号: 6, 页码: 716-721
作者:
Yu LJ
收藏
  |  
浏览/下载:43/0
  |  
提交时间:2010/08/12
Fourier transform method
gain measurement
optical spectrum analyzer (OSA)
semiconductor laser
EMISSION-SPECTRA
DIODES