Phasefront preservation in high-gain Raman amplification

1990 ◽  
Vol 26 (7) ◽  
pp. 1285-1291 ◽  
Author(s):  
B.W. Nicholson ◽  
J.A. Russell ◽  
D.W. Trainor ◽  
T. Roberts ◽  
C. Higgs
Keyword(s):  
High Gain ◽  
Raman Amplification

High‐gain, high‐efficiency stimulated Raman amplification with beam clean‐up

1989 ◽  
Vol 66 (10) ◽  
pp. 4625-4634 ◽  
Author(s):  
A. Mandl ◽  
R. Holmes ◽  
A. Flusberg ◽  
S. Fulghum ◽  
D. Angeley
Keyword(s):  
High Efficiency ◽  
High Gain ◽  
Raman Amplification ◽  
Stimulated Raman

Performance Characterisation and Limitations of High-Gain Discrete Raman Amplification

2016 ◽  
Author(s):  
A. E. El-Taher ◽  
M.F.C. Stephens ◽  
V. Gordienko ◽  
W. Forysiak ◽  
P Harper ◽  
...  
Keyword(s):  
High Gain ◽  
Raman Amplification

scholarly journals Chirped pulse Raman amplification in plasma: high gain measurements

2009 ◽  
Author(s):  
G. Vieux ◽  
X. Yang ◽  
A. Lyachev ◽  
B. Ersfeld ◽  
J. Farmer ◽  
...  
Keyword(s):  
High Gain ◽  
Raman Amplification ◽  
Chirped Pulse

scholarly journals An ultra-high gain and efficient amplifier based on Raman amplification in plasma

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
G. Vieux ◽  
S. Cipiccia ◽  
D. W. Grant ◽  
N. Lemos ◽  
P. Grant ◽  
...  
Keyword(s):  
High Gain ◽  
Raman Amplification

Effect of energy filtering on micro-diffraction in the SEM

1994 ◽  
Vol 52 ◽  
pp. 604-605
Author(s):  
James F. Mancuso ◽  
Leo A. Fama ◽  
William B. Maxwell ◽  
Jerry L. Lehman ◽  
Hasso Weiland ◽  
...  
Keyword(s):  
Detection Efficiency ◽  
Ccd Camera ◽  
High Gain ◽  
Microchannel Plate ◽  
Electrostatic Energy ◽  
Energy Filtering ◽  
Electron Channelling ◽  
Low Energy Electrons ◽  
Low Sensitivity ◽  
Angular Field Of View

Micro-diffraction based crystallography is essential to the design and development of many classes of ‘crafted materials’. Although the scanning electron microscope can provide crystallographic information with high spatial resolution, its current utility is severely limited by the low sensitivity of existing diffraction techniques (ref: Dingley). Previously, Joy showed that energy filtering increased contrast and pattern visibility in electron channelling. This present paper discribes the effect of energy filtering on EBSP sensitivity and backscattered SEM imaging.The EBSP detector consisted of an electron energy filter, a microchannel plate detector, a phosphor screen, optical coupler, and a slow scan CCD camera. The electrostatic energy filter used in this experiment was constructed as a cone with 5 coaxial electrodes. The angular field-of-view of the filter was approximately 38°. The microchannel plate, which was the initial sensing component, had high gain and had 50% to 80% detection efficiency for the low energy electrons that passed through the retarding field filter.

Equivalent Noise Dose Obtained Through Hearing Aids in the Classrooms of Hearing-Impaired Children

1990 ◽  
Vol 21 (3) ◽  
pp. 147-150
Author(s):  
Ronald A. Wilde
Keyword(s):  
Hearing Aids ◽  
High Gain ◽  
Hearing Impaired ◽  
Deaf Children ◽  
Impaired Children ◽  
Very High ◽  
Hearing Impaired Children

A commercial noise dose meter was used to estimate the equivalent noise dose received through high-gain hearing aids worn in a school for deaf children. There were no significant differences among nominal SSPL settings and all SSPL settings produced very high equivalent noise doses, although these are within the parameters of previous projections.

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