laser heating
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2022 ◽  
Vol 146 ◽  
pp. 107494
Author(s):  
Shunta Fukushima ◽  
Hirofumi Hidai ◽  
Souta Matsusaka ◽  
Akira Chiba ◽  
Noboru Morita

Author(s):  
Tian Zhao ◽  
Ying Liu ◽  
kai wei ◽  
Hongtai Xie ◽  
Tangjie Mu ◽  
...  

Abstract Ultra-sensitive comagnetometers, which are designed to detect nuclear-and electron-spin-dependent interaction, have important applications ranging from basic research to inertial navigation systems (INSs). Unfortunately, electric heating, which is typically used in comagnetometers, introduces systematic errors because of the unavoidable generation of a modulated magnetic field. In this study, we investigate and introduce K-Rb-21Ne comagnetometer that uses laser heating for the first time, when operated in the spin-exchange relaxation free (SERF) regime. The performance of the comagnetometer, which is equipped with both laser heating and electric heating, is investigated, and the two heating modes are compared. The temperature characteristics of the comagnetometer are studied theoretically and experimentally. By optimizing the operating temperature and power density of the pump-light, an equivalent rotation sensitivity of 2.5×10^(-7) rad/s/√Hz@1Hz is achieved in laser heating mode. The improvement of laser-heating technology could prove essential to reduce electron relaxation and increase the low-frequency sensitivity of comagnetometers. Our results indicate that laser heating can make comagnetometers more suitable for applications in basic research (fifth force, dark matter, etc.), INSs, and other accurate measurements of electronic and nuclear precession.


2022 ◽  
Author(s):  
Qi Zheng ◽  
Rong Yang ◽  
Kang Wu ◽  
Xiao Lin ◽  
Shixuan Du ◽  
...  

Abstract We report a facile phase conversion method that can locally convert n-type SnSe2 into p-type SnSe by direct laser irradiation. Raman spectra of SnSe2 flakes before and after laser irradiation confirm the phase conversion of SnSe2 to SnSe. By performing the laser irradiation on SnSe2 flakes at different temperatures, it is found that laser heating effect induces the removal of Se atoms from SnSe2 and results in the phase conversion of SnSe2 to SnSe. Lattice-revolved transmission electron microscope images of SnSe2 flakes before and after laser irradiation further confirm such conversion. By selective laser irradiation on SnSe2 flakes, a pattern with SnSe2/SnSe heteostructures is created. This indicates that the laser induced phase conversion technique has relatively high spatial resolution and enables the creation of micron-sized in-plane p-n junction at predefined region.


Author(s):  
T. Tamiya ◽  
Y. Bando ◽  
D. Golberg ◽  
M. Eremets ◽  
K. Takemura ◽  
...  

2022 ◽  
Author(s):  
Junhwi Bak ◽  
Anuj Rekhy ◽  
Christopher Limbach ◽  
Richard B. Miles ◽  
James Creel

AIP Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 015010
Author(s):  
Jiawei Wang ◽  
Chongyu Lin ◽  
Guobin Feng ◽  
Bin Li ◽  
Lixiong Wu ◽  
...  

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