Characterization of single-mode coated fibers at low temperatures using periodic distortion of the fiber axis

1987 ◽  
Vol 5 (8) ◽  
pp. 1111-1117
Author(s):  
H. Grebel ◽  
G. Herskowitz ◽  
M. Mezhoudi
Keyword(s):  
Low Temperatures ◽  
Single Mode ◽  
Fiber Axis

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.

Characterization of a thermoelectric generator at low temperatures

2012 ◽  
Vol 62 ◽  
pp. 47-50 ◽  
Author(s):  
Sevan Karabetoglu ◽  
Altug Sisman ◽  
Z. Fatih Ozturk ◽  
Turker Sahin
Keyword(s):  
Low Temperatures ◽  
Thermoelectric Generator

Interferometric characterization of single-mode bent optical fibers

2000 ◽  
Vol 87 (7) ◽  
pp. 3254-3257 ◽  
Author(s):  
F. El-Diasty
Keyword(s):  
Optical Fibers ◽  
Single Mode

scholarly journals Characterization of Pseudomonas spp. and Associated Proteolytic Properties in Raw Milk Stored at Low Temperatures

2017 ◽  
Vol 8 ◽  
Author(s):  
Lu Meng ◽  
Yangdong Zhang ◽  
Huimin Liu ◽  
Shengguo Zhao ◽  
Jiaqi Wang ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Raw Milk ◽  
Pseudomonas Spp

Preparation and Characterization of Pt/Al-ZSM-5 Catalysts and their Reactivities for the Oxidation of CO with N2O at Low Temperatures

2005 ◽  
Vol 102 (3-4) ◽  
pp. 149-152 ◽  
Author(s):  
Masaya Matsuoka ◽  
Kiyoshi Iino ◽  
Haijun Chen ◽  
Yukiko Yamasaki ◽  
Gianmario Marta ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Oxidation Of Co

Einfluss von Silan-dotierten Umgebungsatmosphären auf tribologischen Eigenschaften von Titan

2021 ◽  
Author(s):  
Selina Raumel ◽  
Khemais Barienti ◽  
Folke Dencker ◽  
Florian Nürnberger ◽  
Marc C. Wurz
Keyword(s):  
Low Temperatures ◽  
Surface Oxidation ◽  
Wear Volume ◽  
Ambient Atmosphere ◽  
Free Atmosphere ◽  
Metalworking Industry ◽  
Tribological System ◽  
Identification And Characterization ◽  
Ball On Disc

The production processes of the metalworking industry are usually carried out in the presence of oxygen. Par ticularly due to surface oxidation on tools and parts during production under normal atmosphere, high wear is observed in tribological systems. The focus of these investigations is the question to what extent the ambient atmosphere has an influence on the tribological system. For this purpose, the identification and characterization of wear mechanisms in an oxygen-free atmosphere is of high relevance. To analyse the influence of the ambi ent atmosphere on the tribological properties of titanium, ball-on-disc investigations are carried out on a univer sal tribometer (UMT) in an air, argon and silane-anodized atmosphere. By suppressing the oxidation under ex clusion of oxygen, a reduction of the tribochemical wear could be shown, which is accompanied by a reduction of the wear volume by a Factor of 4.5. However, due to the adhesion of both friction partners, which already occurs at low temperatures, caused by the omission of the friction-reducing cover layers, the friction coefficient increased. In addition, novel alloy formations at the interfaces were detected and analysed.

Sign in / Sign up

Export Citation Format

Share Document