Self-mixing detection of backscattered radiation in a single-mode erbium fibre laser for Doppler spectroscopy and velocity measurements

2014 ◽  
Vol 44 (4) ◽  
pp. 309-313 ◽  
Author(s):  
A K Dmitriev ◽  
A N Konovalov ◽  
V A Ul'yanov
Keyword(s):  
Single Mode ◽  
Fibre Laser ◽  
Velocity Measurements ◽  
Doppler Spectroscopy

Critical layers in accelerating two-layer flows

1988 ◽  
Vol 197 ◽  
pp. 429-451 ◽  
Author(s):  
Donald B. Altman
Keyword(s):  
Laboratory Experiments ◽  
Single Mode ◽  
Shear Instability ◽  
Mean Flow ◽  
Velocity Measurements ◽  
Interfacial Wave ◽  
Flow Acceleration ◽  
Critical Layers ◽  
The Mean ◽  
Processing Software

A series of laboratory experiments on accelerating two-layer shear flows over topography is described. The mean flow reverses at the interface of the layers, forcing a critical layer to occur there. It is found that for a sufficiently thin interface, a slowly growing recirculating region, the ‘acceleration rotor’, develops on the interfacial wave at mean-flow Richardson numbers of O(0.5). This, in turn, can induce a secondary dynamical shear instability on the trailing edge of the wave. A single-mode, linear, two-layer numerical model reproduces many features of the acceleration rotor if mean-flow acceleration and bottom forcing are included. Velocity measurements are obtained from photographs using image processing software developed for the automated reading of particle-streak photographs. Typical results are shown.

scholarly journals Efficient diode-pumped CW and Q-switched single-mode fibre laser

1986 ◽  
Vol 22 (4) ◽  
pp. 198 ◽  
Author(s):  
I.M. Jauncey ◽  
J.T. Lin ◽  
L. Reekie ◽  
R.J. Mears
Keyword(s):  
Single Mode ◽  
Fibre Laser ◽  
Single Mode Fibre ◽  
Diode Pumped ◽  
Mode Fibre

Use of single-mode pumping as a method for suppressing mode instability in fibre lasers by an example of a 100-W narrowband Yb-doped fibre laser

2018 ◽  
Vol 48 (12) ◽  
pp. 1095-1098
Author(s):  
A A Surin ◽  
A A Molkov ◽  
T E Borisenko ◽  
K Yu Prusakov
Keyword(s):  
Single Mode ◽  
Fibre Laser ◽  
Fibre Lasers ◽  
Mode Instability

scholarly journals Doppler Spectroscopy System for the Plasma Velocity Measurements in SMOLA Helical Mirror

2019 ◽  
Vol 14 (0) ◽  
pp. 2402020-2402020 ◽  
Author(s):  
Anna A. INZHEVATKINA ◽  
Aleksander V. BURDAKOV ◽  
Ivan A. IVANOV ◽  
Vladimir V. POSTUPAEV ◽  
Anton V. SUDNIKOV
Keyword(s):  
Plasma Velocity ◽  
Velocity Measurements ◽  
Doppler Spectroscopy ◽  
Spectroscopy System

Efficient 0.9-μm neodymium-doped single-mode fibre laser

2003 ◽  
Vol 33 (12) ◽  
pp. 1035-1037 ◽  
Author(s):  
Igor' A Bufetov ◽  
V V Dudin ◽  
Aleksei V Shubin ◽  
A K Senatorov ◽  
Evgenii M Dianov ◽  
...  
Keyword(s):  
Single Mode ◽  
Fibre Laser ◽  
Single Mode Fibre ◽  
Mode Fibre
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