Results 11 to 20 of about 80,084 (309)
Optics Express, 2006 The phase noise of two low noise, high quality factor actively modelocked lasers is investigated. It is found that increasing the quality factor of a laser can increase the phase noise relative to the RF source used to modelock the laser, even though the absolute noise of the laser is decreased.
F Quinlan +2 more
exaly +6 more sources
Phase noise of diode laser in self-mixing interference
Optics Express, 2005 We investigate the phase noise of a diode laser based on the interferometric self-mixing effect. A detuned Fabry-Perot cavity converts the phase noise into intensity noise, and the noise is measured by the novel method as a function of the amount of feedback and the distance between the target and the laser front facet. Experimental results can be well
Tao Geng, Junmin Wang, Tiancai Zhang
exaly +3 more sources
Dynamics of Semiconductor Laser Coupled with Two External Cavities
Applied Sciences, 2023 An investigation into the dynamic states and relative intensity noise of laser diodes subjected to double optical feedback has been conducted. We employed modified and improved time-delay rate equations to account for double external optical feedback ...
Salah Abdulrhmann +2 more
doaj +1 more source
Optomechanical entanglement in the presence of laser phase noise [PDF]
Physical Review A, 2011 We study the simplest optomechanical system in the presence of laser phase noise using the covariance matrix formalism. We show that the destructive effect of the phase noise is especially strong in the bistable regime. This explains why ground state cooling is still possible in the presence of phase noise, as it happens far away from the bistable ...
Ghobadi, R. +2 more
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Photonics, 2023 Narrow-linewidth lasers have a high spectral purity, long coherent length, and low phase noise, so they have important applications in atomic clocks, precision measurement, and quantum computing. We inject a transmitted laser from a narrow-linewidth (∼15
Lili Hao +4 more
doaj +1 more source
Electronic laser phase noise reduction [PDF]
2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2013 The first integrated wideband laser phase noise reduction scheme is presented where the laser phase noise is first detected using a photonic chip, processed using an electronic chip, and subtracted from the laser phase in a feed-forward manner. The proof-of-concept experiments on a commercially available 1553nm distributed feedback laser show linewidth
Firooz Afiatouni +5 more
openaire +1 more source
Suppressing laser phase noise in an optomechanical system [PDF]
Frontiers of Physics, 2021 We propose a scheme to suppress the laser phase noise without increasing the optomechanical single-photon coupling strength. In the scheme, the parametric amplification terms, created by Kerr and Duffing nonlinearities, can restrain laser phase noise and strengthen the effective optomechanical coupling, respectively.
Zeng, Yexiong, Xiong, Biao, Li, Chong
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Photonics, 2023 A new method to measure laser phase noise and frequency stability based on the phase-sensitive optical time-domain reflectometry is proposed. In this method, the laser under test is utilized in a phase-sensitive optical time-domain reflectometer, which ...
Danil M. Bengalskii +5 more
doaj +1 more source
Simple Noise Mitigation Scheme for Coherent Optical DMT Signal Transmission System
IEEE Access, 2020 We propose and experimentally demonstrate a noise mitigation scheme for coherent optical discrete multitone (DMT) signal transmission system. The proposed scheme can mitigate the laser phase noise and additive white Gaussian noise (AWGN) simultaneously ...
Ke Li +7 more
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Unveiling the dynamics of optical frequency combs from phase-amplitude correlations
Physical Review Research, 2021 The noise dynamics of an optical frequency comb based on a mode-locked Ti-sapphire laser is analyzed in terms of noise modes. A spectrally resolved multipixel homodyne detection enables the simultaneous measurement of the amplitude and phase noises of ...
M. Ansquer +6 more
doaj +1 more source