oscillation threshold
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2021 ◽  
Author(s):  
Pingyang Zeng ◽  
Jiayue Wu ◽  
Di Xia ◽  
Zelin Yang ◽  
Yaodong Sun ◽  
...  

2019 ◽  
Vol 9 (22) ◽  
pp. 4845 ◽  
Author(s):  
Sepideh Naserbakht ◽  
Andreas Naesby ◽  
Aurélien Dantan

Noninvasive tuning of the mechanical resonance frequencies of suspended parallel nanomembranes in various monolithic arrays is achieved by piezoelectric control of their tensile stress. Parametric amplification of their thermal fluctuations is shown to be enhanced by the piezoelectric actuation and amplification factors of up to 20 dB in the sub-parametric oscillation threshold regime are observed.


2019 ◽  
Vol 44 (12) ◽  
pp. 3062 ◽  
Author(s):  
Tengfei Hao ◽  
Jian Tang ◽  
Nuannuan Shi ◽  
Wei Li ◽  
Ninghua Zhu ◽  
...  

2019 ◽  
Vol 16 (6) ◽  
pp. 7362-7374 ◽  
Author(s):  
Yuanxian Hui ◽  
◽  
Genghong Lin ◽  
Qiwen Sun ◽  

Optica ◽  
2017 ◽  
Vol 4 (6) ◽  
pp. 619 ◽  
Author(s):  
Xingchen Ji ◽  
Felippe A. S. Barbosa ◽  
Samantha P. Roberts ◽  
Avik Dutt ◽  
Jaime Cardenas ◽  
...  

2016 ◽  
Vol 19 (2) ◽  
pp. 105
Author(s):  
Zoran Ljuboje

The photorefractive effect presents a periodical change of the refractive index of an optical environment under the influence of a coherent light. An interesting phenomenon which occurs at this effect is optical phase conjugation (PC). Photorefractive oscillators, that is photorefractive mirrors present important decides in photorefractive optics and their function is based on photorefractive effect. In these oscillators, a phase-conjugated light beam occurs. The basic characteristics of photorefractive oscillators, such as reflectivity, the existance of the oscillation threshold and the threshold of the coupling strength are explained by the so-called grating-action method. This is analysed on a ring oscillator, semilinear mirror and linear mirror.


2014 ◽  
Vol 117 (3) ◽  
pp. 453-461
Author(s):  
S. V. Fedorov ◽  
N. N. Rosanov ◽  
A. V. Shipulin

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