Results 51 to 60 of about 3,885 (181)
Bayesian Estimation of Laser Linewidth From Delayed Self-Heterodyne Measurements
We present a statistical inference approach to estimate the frequency noise characteristics of ultra-narrow linewidth lasers from delayed self-heterodyne beat note measurements using Bayesian inference. Particular emphasis is on estimation of the intrinsic (Lorentzian) laser linewidth.
Lutz Mertenskötter, Markus Kantner
openaire +2 more sources
Refined method to extract frequency-noise components of lasers by delayed self-heterodyne
, 2021 An essential metric to quantify the stability of a laser is its frequency noise (FN). This metric yields information on the linewidth and on noise components which limit its usage for high precision purposes such as coherent communication. Its experimental determination relies on challenging optical phase measurements, for which dedicated commercial ...
Arent, Niklas Hedegaard +2 more
openaire +2 more sources
Modal Theory of Phase‐Modulated and Frequency‐Shifting Ring Cavities
Advanced Photonics Research, Volume 6, Issue 12, December 2025.We present a theoretical and experimental characterization of the optical modes of dispersionless ring cavities with phase modulators or frequency shifters. Their response to arbitrary modulation acts as a filter for phase‐modulated modes that determine the optical output of passive resonators and lasers. This provides a general framework for analyzing
Miguel Cuenca +2 more
wiley +1 more source
Fiber-optic delay-line stabilization of heterodyne optical signal generator and method using same [PDF]
, 1997 The present invention is a laser heterodyne frequency generator system with a stabilizer for use in the microwave and millimeter-wave frequency ranges utilizing a photonic mixer as a photonic phase detector in a stable optical fiber delay-line. Phase and
Logan, Ronald T.
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Differential temperature sensors: Review of applications in the test and characterization of circuits, usage and design methodology [PDF]
, 2019 Differential temperature sensors can be placed in integrated circuits to extract a signature ofthe power dissipated by the adjacent circuit blocks built in the same silicon die.
Altet Sanahujes, Josep +3 more
core +2 more sources
Advanced Photonics Research, Volume 6, Issue 12, December 2025.Self‐mixing interferometry is a powerful technique that brings together the exceptional sensitivity of phase measurements with the unequalled simplicity of the self‐mix configuration based on modulation of the cavity field induced by the return from the target. According to the selected measurand, displacement or vibration, and to the analog of digital
Silvano Donati
wiley +1 more source
Confidential direct communications: a quantum approach using continuous variables
, 2009 We consider the problem of privacy in direct communications, showing how quantum mechanics can be useful to guarantee a certain level of confidentiality. In particular, we review a continuous variable approach recently proposed by us [S. Pirandola et al.,
Braunstein, Samuel L. +3 more
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Simultaneous laser vibrometry on multiple surfaces with a single beam system using range-resolved interferometry [PDF]
, 2015 A novel range-resolved interferometric signal processing technique that uses sinusoidal optical frequency modulation is applied to multi-surface vibrometry, demonstrating simultaneous optical measurements of vibrations on two surfaces using a single ...
Adams, Alvin +5 more
core +1 more source
APL PhotonicsStable laser emission with ultra-narrow linewidth plays an important role in making fundamental scientific breakthroughs. Here, we propose and demonstrate a new technique for the generation of an ultra-narrow linewidth and highly stable laser based on ...
Mingzhao Chen +4 more
doaj +1 more source
Femtosecond spectral electric field reconstruction using coherent transients [PDF]
, 2005 We have implemented a new approach for measuring the time-dependent intensity and phase of ultrashort optical pulses. It is based on the interaction between shaped pulses and atoms, leading to coherent transients.Comment: 4 pages Accepted in Optics ...
Chatel, Béatrice +2 more
core +1 more source