Results 21 to 30 of about 25,049 (217)

Bichromatic Local Oscillator for Detection of Two-Mode Squeezed States of Light [PDF]

, 2006
We present a new technique for the detection of two-mode squeezed states of light that allows for a simple characterization of these quantum states. The usual detection scheme, based on heterodyne measurements, requires the use of a local oscillator with
Alberto M. Marino, Bennink, Braunstein, Braunstein, C. R. Stroud, Jr., Chelkowski, Collett, Einstein, Furusawa, Gray, Kim, Levandovsky, Loudon, Marino, McKenzie, Ou, Pereira, Reid, Reid, Robert W. Boyd, Ryan S. Bennink, Schori, Silberhorn, Vincent Wong, Yuen, Zhang   +25 more
core   +2 more sources

Modeling the Heterodyne Efficiency of Array Detector Systems in the Presence of Target Speckle

IEEE Photonics Journal, 2019
To solve the speckle effect problem in heterodyne detection, an array detector is proposed; heterodyne efficiency is modeled by accounting for speckle and using an additional parameter to simulate coherent summation processing.
Yutao Liu, Xiaodong Zeng, Changqing Cao, Zhejun Feng, Zhi Lai, Zhaojin Fan, Ting Wang, Xu Yan, Shuanglin Fan   +8 more
doaj   +1 more source

Shot noise limited heterodyne detection of CARS signals [PDF]

, 2008
We demonstrate heterodyne detection of CARS signals using a cascaded phase-preserving chain to generate the\ud CARS input wavelengths and a coherent local oscillator.
Búttner, E., Jurna, M., Korterik, J.P., Offerhaus, H.L., Otto, C., Rimke, I.   +5 more
core   +2 more sources

Heterodyne-Detected Dispersed Vibrational Echo Spectroscopy [PDF]

The Journal of Physical Chemistry A, 2009
We develop heterodyned dispersed vibrational echo spectroscopy (HDVE) and demonstrate the new capabilities in biophysical applications. HDVE is a robust ultrafast technique that provides a characterization of the real and imaginary components of third-order nonlinear signals with high sensitivity and single-laser-shot capability and can be used to ...
Jones, Kevin C., Ganim, Ziad, Tokmakoff, Andrei   +2 more
openaire   +3 more sources

Equivalent Measurement and Real-Time Compensation of Error Caused by Intensity Change in Deep Sub-Nanometer Displacement Measuring Interferometry

Photonics, 2022
Heterodyne interferometry is playing an increasingly important role in the field of high-end equipment manufacturing. In photolithography, the precision requirement of displacement metrology is increasing to a deep sub-nanometer scale with the decrease ...
Jianing Wang, Yunke Sun, Xu Xing, Pengcheng Hu, Di Chang, Jiubin Tan   +5 more
doaj   +1 more source

Quantum Noise of Kramers-Kronig Receiver

, 2022
Abstrac--Kramers-Kronig (KK) receiver, which is equivalent to heterodyne detection with one single photodetector, provides an efficient method to reconstruct the complex-valued optical field by means of intensity detection given a minimum-phase signal ...
He, Qiongyi, Kang, Haijun, Su, Xiaolong, Zhang, Fan, Zheng, Jiayu   +4 more
core  

Heterodyne and adaptive phase measurements on states of fixed mean photon number [PDF]

, 1998
The standard technique for measuring the phase of a single mode field is heterodyne detection. Such a measurement may have an uncertainty far above the intrinsic quantum phase uncertainty of the state. Recently it has been shown [H. M. Wiseman and R.
A. S. Holevo, C. W. Helstrom, D. Berry, E. B. Davies, F. London, G. M. D’Ariano, G. S. Summy, H. J. Carmichael, H. M. Wiseman, H. M. Wiseman, H. M. Wiseman, H. M. Wiseman, H. M. Wiseman, H. P. Yuen, M. J. Collett, T. Opatrný, U. Leonhardt, Zhong-Xi Zhang   +17 more
core   +2 more sources

Comparison between Direct and Coherent Optical Communication System

مجلة بغداد للعلوم, 2011
The work in this paper focuses on the system quality of direct and coherent communication system for two computers. A system quality is represented by Signal to Noise ratio (SNR) and Bit Error Rate (BER).
Baghdad Science Journal
doaj   +1 more source

Experimental comparison of autodyne and heterodyne laser interferometry using a Nd:YVO4 microchip laser

, 2011
Using a Nd:YVO4 microchip laser with a relaxation frequency in the megahertz range, we have experimentally compared a heterodyne interferometer based on a Michelson configuration with an autodyne interferometer based on the laser optical feedback imaging
Blaize, Bramati, Eric Lacot, Gilles, Hugon, Hugues Guillet de Chatellus, Kawai, Ko, Kolobov, Lacot, Lacot, Lacot, Lacot, Lacot, Laroche, Muzet, Okamoto, Olivier Hugon, Olivier Jacquin, Otsuka, Otsuka, Otsuka, Otsuka, Otsuka, Suddo, Wilfried Glastre, Witomski, Zaykowski   +27 more
core   +2 more sources

A μrad Accuracy and nW Detection Sensitivity Four-Quadrant Heterodyne Coherent Angular Measurement System

Photonics
In gravitational wave measurement and inter-satellite laser communication systems, the relative rotation and motion between the transmitter and receiver terminals introduces small angular deviations over a link distance of thousands of kilometers, which ...
Ziqi Zhang, Shoufeng Tong, Peng Lin, Dixiang Zeng, Xiaonan Yu   +4 more
doaj   +1 more source