Subsurface-AFM: sensitivity to the heterodyne signal

2013 ◽  
Vol 24 (36) ◽  
pp. 365701 ◽  
Author(s):  
G J Verbiest ◽  
T H Oosterkamp ◽  
M J Rost
Keyword(s):  
Heterodyne Signal

Balanced heterodyne signal extraction in a postmodulated Sagnac interferometer at low frequency

1997 ◽  
Vol 22 (19) ◽  
pp. 1485 ◽  
Author(s):  
Ke-Xun Sun ◽  
Martin M. Fejer ◽  
Eric K. Gustafson ◽  
Robert L. Byer
Keyword(s):  
Low Frequency ◽  
Signal Extraction ◽  
Sagnac Interferometer ◽  
Heterodyne Signal

A Short-Range Millimeter-Wave Detector System

2013 ◽  
Vol 347-350 ◽  
pp. 102-106
Author(s):  
Shu Sheng Peng ◽  
Feng Xu ◽  
Li Wu ◽  
Jian Zhong Xu
Keyword(s):  
Millimeter Wave ◽  
High Speed ◽  
Short Range ◽  
Digital Signal ◽  
Low Noise ◽  
Detector System ◽  
Wave Detector ◽  
Front End ◽  
Noise Amplifier ◽  
Heterodyne Signal

This paper is focused on a millimeter-wave detector system that works at self-heterodyne mode. The detector antenna and MMW front-end are integrated and a weak heterodyne signal is amplified with a low-noise amplifier. After high-speed sampled with a high-speed A/D, digital signal are processed in a FPGA. Some experiment results are shown finally.

Orthogonal Dual-Frequency SOA-Fiber Laser

2013 ◽  
Vol 596 ◽  
pp. 129-133
Author(s):  
Yoshitaka Takahashi ◽  
Yudai Fukaya ◽  
Sho Takahashi
Keyword(s):  
Semiconductor Optical Amplifier ◽  
Ring Laser ◽  
Ring Cavity ◽  
Optical Amplifier ◽  
Dual Frequency ◽  
Heterodyne Interferometry ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Frequency Laser ◽  
Heterodyne Signal

In order to develop a new orthogonal dual-frequency laser, we studied a fiber ring laser using a SOA (semiconductor optical amplifier) and aim to apply it to a novel light source for optical heterodyne interferometry. The frequency difference was generated by a linear or circular birefringent medium inserted into the ring cavity. To obtain heterodyne signal optical and electrical filters were introduced.

Photon time-interval statistics applied to the analysis of laser heterodyne signal with photon counter

2012 ◽  
Vol 285 (18) ◽  
pp. 3820-3826 ◽  
Author(s):  
Lisheng Liu ◽  
Heyong Zhang ◽  
Jin Guo ◽  
Shuai Zhao ◽  
Tingfeng Wang
Keyword(s):  
Time Interval ◽  
Photon Counter ◽  
Laser Heterodyne ◽  
Heterodyne Signal

Criterion Influence of Multiple Signal Classification Algorithm for Spatial Heterodyne Signal Extraction

2018 ◽  
Vol 47 (12) ◽  
pp. 1228001
Author(s):  
王新强 WANG Xin-qiang ◽  
王欢 WANG Huan ◽  
熊伟 XIONG Wei ◽  
叶松 YE Song ◽  
汪杰君 WANG Jie-jun ◽  
...  
Keyword(s):  
Classification Algorithm ◽  
Signal Classification ◽  
Signal Extraction ◽  
Multiple Signal Classification ◽  
Multiple Signal ◽  
Heterodyne Signal
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