Results 11 to 20 of about 5,337,605 (357)
Coherent detection spectroscopy
Physica, 1969 Various methods of optical spectroscopy are compared, with special emphasis on resolution and acceptance of the systems. It is shown that coherent detection with a laser as a local oscillator has important advantages for specific applications in astronomical spectroscopy and interferometry, especially in the infrared.
Bueren, H.G. van
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Factors Affecting the Sensitivity of Coherent Detection
Guangtongxin yanjiu【Objective】Coherent optical communication is a high-speed, high-quality, and highly secure communication method, and coherent detection plays an extremely important role in coherent optical communication.
HAN Meimiao +3 more
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Study on external cavity diode laser with a wide mode-hopping free tuning range
Frontiers in Physics, 2022 A wide mode-hopping free and narrow linewidth tunable laser diode source with a Littman-Metcalf arrangement based on a diffraction grating is presented. Several experiments are carried out to demonstrate the tuning characteristics and spectral linewidth ...
Aiguo Zhang +15 more
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A Compensation Method for Nonlinearity Errors in Optical Interferometry
Sensors, 2023 Optical coherent detection is widely used for highly sensitive sensing applications, but nonlinearity issues pose challenges in accurately interpreting the system outputs.
Yanlu Li, Emiel Dieussaert
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IEEE Access, 2023 Among various multi-wave imaging methods, the photoacoustic imaging (PAI) has attracted more attention because it can achieve higher resolution and contrast through combining advantages of light excitation and ultrasound detection.
Chuanshi Yang +5 more
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Coherent Detection of Electron Dephasing [PDF]
Physical Review Letters, 2010 We show that an Aharonov-Bohm (AB) ring with asymmetric electron injection can act as a coherent detector of electron dephasing. The presence of a dephasing source in one of the two arms of a moderately-to-highly asymmetric ring changes the response of the system from total reflection to complete transmission while preserving the coherence of the ...
Strambini E +6 more
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Optics Express, 2021 A novel all-optical stealth and secured transmission is proposed and demonstrated. Spectral replicas of the covert signal are carried by multiple tones of a gain switched optical frequency comb, optically coded with spectral phase mask, and concealed ...
Eyal Wohlgemuth +9 more
semanticscholar +1 more source
External Modulation Optical Coherent Domain Reflectometry with Long Measurement Range
Sensors, 2021 Optical coherent domain reflectometry (OCDR) can achieve a high spatial resolution that is independent of the bandwidth of the receiver, but the measurement range is usually very limited.
Yinghong Xue +2 more
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Detection and discrimination of coherent motion [PDF]
Perception & Psychophysics, 1990 When viewing a pair of bars defined by the difference of spatial Gaussian functions (DOGs), human observers can discriminate accurately the relative movements of the bars, even when they differ in spatial frequency. On each trial, observers viewed two brief presentation intervals in which a pair of vertically oriented DOGs moved randomly back and forth
L, Mowafy, R, Blake, J S, Lappin
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Frontiers in Physics, 2021 The optical orthogonal frequency division multiplexing (OFDM) is proven to be a most promising technology for the next-generation high-capacity and ultra-wide bandwidth 5G communication systems.
Sunil N Thool +2 more
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