Effects of Broadband Laser Generated Ultrasound on Array Gain

2006 ◽  
Author(s):  
Akio Kita
Keyword(s):  
Broadband Laser ◽  
Array Gain

Effects of Broadband Laser Generated Ultrasound on Array Gain

2007 ◽  
Vol 26 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Akio Kita ◽  
I. Charles Ume
Keyword(s):  
Broadband Laser ◽  
Array Gain

Uncertainty relation in broadband laser pulse shaping

2020 ◽  
Author(s):  
Konstantin B. Yushkov ◽  
Vladimir Ya. Molchanov ◽  
E.A. Khazanov
Keyword(s):  
Laser Pulse ◽  
Pulse Shaping ◽  
Uncertainty Relation ◽  
Broadband Laser ◽  
Laser Pulse Shaping

scholarly journals Array Gain of a Linear Array in an Ocean Waveguide

2021 ◽  
Vol 11 (11) ◽  
pp. 5046
Author(s):  
Zong-Wei Liu ◽  
Chun-Mei Yang ◽  
Ying Jiang ◽  
Lei Xie ◽  
Jin-Yan Du ◽  
...  
Keyword(s):  
Transmission Loss ◽  
Spatial Coherence ◽  
Correlation Coefficients ◽  
Channel Correlation ◽  
Acoustic Channel ◽  
Physical Mechanisms ◽  
Channel Characteristics ◽  
Special Case ◽  
Array Gain ◽  
Insight Into

Array gain is investigated based on the acoustic channel characteristics manifested by the fluctuant transmission loss and decrease in the acoustic channel spatial coherence. An analytical expression is derived as the summation of the products of the acoustic channel correlation coefficients and root-mean-square pressures. The formula provides insight into the physical mechanisms of the gain degradation in the ocean waveguide. Furthermore, this formula provides a new method to study array gain in the ocean waveguide from underwater acoustic field. The obtained expression is a more general formula that is applicable to shallow water, deep sea, and continental slope, with the traditional methods as a special case. Numerical results show that the array gain calculated by previous formulas are generally overestimated, caused by ignoring the effect of transmission loss fluctuation.

scholarly journals Broadband Laser Doppler Frequency Shift Emulator for Satellite Laser Communication

2019 ◽  
Vol 11 (6) ◽  
pp. 1-12
Author(s):  
Jinye Li ◽  
Yuan Yao ◽  
Guozhang Wu ◽  
Jiaqing Hou ◽  
Wenqi Yu ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Doppler Frequency ◽  
Doppler Frequency Shift ◽  
Laser Doppler ◽  
Laser Communication ◽  
Satellite Laser Communication ◽  
Broadband Laser

Four-wave hole burning spectroscopy with a broadband laser source

1997 ◽  
Vol 274 (5-6) ◽  
pp. 518-524 ◽  
Author(s):  
M. Tian ◽  
F. Grelet ◽  
D. Pavolini ◽  
J.-P. Galaup ◽  
J.-L. Le Gouët
Keyword(s):  
Laser Source ◽  
Hole Burning ◽  
Broadband Laser

Cr3+doped NaAl(WO 4 ) 2 crystal as a new broadband laser material

2007 ◽  
Author(s):  
V. Nikolov ◽  
I. Nikolov ◽  
P. Peshev
Keyword(s):  
Laser Material ◽  
Broadband Laser
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