Polarization properties of a single-mode gas laser in transverse magnetic fields

1978 ◽  
Vol 17 (3) ◽  
pp. 257-267 ◽  
Author(s):  
D. Lenstra
Keyword(s):  
Magnetic Fields ◽  
Single Mode ◽  
Transverse Magnetic ◽  
Gas Laser

Two-frequency gas laser in mutually orthogonal transverse magnetic fields

1988 ◽  
Vol 18 (2) ◽  
pp. 166-171 ◽  
Author(s):  
V G Gudelev ◽  
A Ch Izmaĭlov ◽  
V M Yasinskiĭ
Keyword(s):  
Magnetic Fields ◽  
Transverse Magnetic ◽  
Gas Laser

Radio Measurements of Coronal Magnetic Fields

1994 ◽  
Vol 144 ◽  
pp. 21-28 ◽  
Author(s):  
G. B. Gelfreikh
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Active Regions ◽  
High Sensitivity ◽  
Coronal Magnetic Field ◽  
Transverse Magnetic ◽  
Radio Sources ◽  
Radio Waves ◽  
Solar Active Regions

AbstractA review of methods of measuring magnetic fields in the solar corona using spectral-polarization observations at microwaves with high spatial resolution is presented. The methods are based on the theory of thermal bremsstrahlung, thermal cyclotron emission, propagation of radio waves in quasi-transverse magnetic field and Faraday rotation of the plane of polarization. The most explicit program of measurements of magnetic fields in the atmosphere of solar active regions has been carried out using radio observations performed on the large reflector radio telescope of the Russian Academy of Sciences — RATAN-600. This proved possible due to good wavelength coverage, multichannel spectrographs observations and high sensitivity to polarization of the instrument. Besides direct measurements of the strength of the magnetic fields in some cases the peculiar parameters of radio sources, such as very steep spectra and high brightness temperatures provide some information on a very complicated local structure of the coronal magnetic field. Of special interest are the results found from combined RATAN-600 and large antennas of aperture synthesis (VLA and WSRT), the latter giving more detailed information on twodimensional structure of radio sources. The bulk of the data obtained allows us to investigate themagnetospheresof the solar active regions as the space in the solar corona where the structures and physical processes are controlled both by the photospheric/underphotospheric currents and surrounding “quiet” corona.

scholarly journals Unusual Polarization Relation between Single-Mode Lasing Emission and Excitation Laser from an Evanescent-Wave Pumped Micro-Cavity Laser

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 66
Author(s):  
Yuchen Wang ◽  
Hongsheng Li ◽  
Shu Hu ◽  
Heng Li ◽  
Chuanxiang Sheng
Keyword(s):  
Evanescent Wave ◽  
Single Mode ◽  
Transverse Magnetic ◽  
Ethanol Solution ◽  
Pump Laser ◽  
Fiber Axis ◽  
Lasing Threshold ◽  
Polarization Direction ◽  
Excitation Laser ◽  
Output Laser

Using a fiber of that is 125 μm in diameter in rhodamine 6G ethanol solution, controllable multi- and single-whispering-gallery-mode (WGM) optofluidic lasers based on evanescent-wave-coupled gain are both available. With multi-mode WGM emission, lasing emission with almost pure TM (transverse magnetic) or almost TE (transverse electric) modes can be obtained when the pump laser has an electric field parallel (perpendicular) to the fiber axis, i.e., the polarization direction of output laser is the same as that of the pump laser. On the other hand, when the laser emission is single-mode, the TE output laser always emerges firstly above lasing threshold, then keeps TE mode while the pump laser’s intensity increases with polarization direction perpendicular to the fiber axis; on the contrary, TE emission will dwindle relatively, while the TM emission emerges and dominates the spectra, when the pump laser’s intensity increases with polarization parallel to the fiber axis. Our work proves that controlling the leakage of the evanescent wave from high-Q microcavities is crucial for both modes of lasing emission and its polarization.

Control of photon beam dose profiles by localized transverse magnetic fields

2000 ◽  
Vol 45 (12) ◽  
pp. N177-N182 ◽  
Author(s):  
L Reiffel ◽  
A Li ◽  
J Chu ◽  
R W Wheatley ◽  
S Naqvi ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Transverse Magnetic ◽  
Photon Beam ◽  
Beam Dose

scholarly journals Diamond-nitrogen-vacancy electronic and nuclear spin-state anticrossings under weak transverse magnetic fields

2016 ◽  
Vol 94 (2) ◽  
Author(s):  
Hannah Clevenson ◽  
Edward H. Chen ◽  
Florian Dolde ◽  
Carson Teale ◽  
Dirk Englund ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Spin State ◽  
Nuclear Spin ◽  
Transverse Magnetic ◽  
Nitrogen Vacancy
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