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Fluctuations in light absorption by atoms are observed by applying laser light on rubidium atoms and measuring the transmitted light intensity fluctuations. These fluctuations are spontaneous noise, which are generic to photon atom…

Atomic Physics · Physics 2015-06-12 Takahisa Mitsui , Kenichiro Aoki

A semi-empirical model is presented for the thermalized temperature $T$ and mean momentum in the direction of laser propagation <$p_{fz}$> of electrons released from O$_{2}$ after the passage of a focused $800$ nm ultrashort pulsed laser…

Plasma Physics · Physics 2025-09-16 Edward L. Ruden

The quantum nature of photonic systems is reflected in the photon statistics of the light they emit. Therefore, the development of quantum optics tools with single photon sensitivity and excellent temporal resolution is paramount to the…

Branched flow is an interesting phenomenon that can occur in diverse systems. It is usually linear in the sense that the flow does not alter the medium properties. Branched flow of light on thin films was recently discovered. A question of…

Plasma Physics · Physics 2022-05-17 K. Jiang , T. W. Huang , C. N. Wu , M. Y. Yu , H. Zhang , S. Z. Wu , H. B. Zhuo , A. Pukhov , C. T. Zhou , S. C. Ruan

Over last decades, the study of laser fluctuations has shown that laser theory may be regarded as a prototypical example of a nonlinear nonequilibrium problem. The present paper discusses the fluctuation relations, recently derived in…

Statistical Mechanics · Physics 2009-11-13 Raphael Chetrite

A relationship between the maximum operating temperature of semiconductor lasers and their emission wavelength is conjectured. The conjecture is supported by a wide variety of existing experimental data for visible and infrared double…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 P. Harrison , E. E. Orlova

We quantify the energy radiated through all the collisionally excited lines in a photoionized nebula which is permeated by temperature fluctuations. We assume that these correspond to hot spots which are the results of an unknown heating…

Astrophysics · Physics 2007-05-23 L. Binette , V. Luridiana

Thermodynamical fluctuations of temperature in mirrors may produce surface fluctuations not only through thermal expansion in mirror body but also through thermal expansion in mirror coating. We analyze the last "surface" effect which can…

Statistical Mechanics · Physics 2015-06-24 V. B. Braginsky , S. P. Vyatchanin

A theory for the photon statistics of a random laser is presented. Noise is described by Langevin operators, where both fluctuations of the electromagnetic field and of the medium are included. The theory is valid for all lasers with small…

Quantum Physics · Physics 2009-11-07 M. Patra

Hot electron temperatures and electron energy spectra in the course of interaction between intense laser pulse and overdense plasmas are reexamined from a viewpoint of the difference in laser wavelength. The hot electron temperature…

Plasma Physics · Physics 2009-11-10 Susumu Kato , Eiichi Takahashi , Tatsuya Aota , Yuji Matsumoto , Isao Okuda , Yoshiro Owadano

Almost a century ago, Johnson and Nyquist presented evidence of fluctuating electrical current and the governing fluctuation dissipation theorem (FDT). Whether, likewise, temperature T can fluctuate is a controversial topic and has led to…

Mesoscale and Nanoscale Physics · Physics 2019-04-11 Bayan Karimi , Fredrik Brange , Peter Samuelsson , Jukka P. Pekola

Correlated states of light, both classical and quantum, can find useful applications in the implementation of several imaging techniques. Among the employed sources, pseudo-thermal states, generated by the passage of a laser beam through a…

Quantum Physics · Physics 2024-03-18 Silvia Cassina , Gabriele Cenedese , Alessia Allevi , Maria Bondani

Representing an ensemble of random lasers with an ensemble of random matrices, we compute average number of lasing modes and its fluctuations. The regimes of weak and strong coupling of the passive resonator to environment are considered.…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Oleg Zaitsev

In this paper laser cooling of atoms with a narrow-line optical transition, i.e. in regimes of quantum nature of laser-light interactions resulting in a significant recoil effect, is studied. It is demonstrated that a minimum laser cooling…

Atomic Physics · Physics 2019-03-06 O. N. Prudnikov , R. Ya Il'enkov , A. V. Taichenachev , V. I. Yudin

We propose and demonstrate that thermal laser evaporation can be applied to all solid, non-radioactive elements in the periodic table. By depositing thin films, we achieve growth rates exceeding 1 angstrom/s with output laser powers less…

Materials Science · Physics 2021-03-24 Thomas J. Smart , Jochen Mannhart , Wolfgang Braun

Laser melting of semiconductors has been observed for almost 40 years; surprisingly, it is not well understood where most theoretical simulations show a laser-induced thermal process. $\textit{Ab initio}$ nonadiabatic simulations based on…

Materials Science · Physics 2016-12-06 Chao Lian , S. B. Zhang , Sheng Meng

Thermal states of light are widely used in quantum optics due to their correlation properties. As is well known, their correlation properties and the photon number distribution as a whole are strongly dependent on the mode number selected…

Quantum Physics · Physics 2020-01-22 K. G. Katamadze , G. V. Avosopiants , N. A. Bogdanova , Yu. I. Bogdanov , S. P. Kulik

We present an analysis of the power fluctuations in the statistical steady state of a passively mode locked laser. We use statistical light-mode theory to map this problem to that of fluctuations in a reference equilibrium statistical…

Statistical Mechanics · Physics 2009-11-13 Oded Basis , Omri Gat

In this work we present results of the analysis of thermal properties of high-power laser bars obtained by spatially resolved thermoreflectance (TR) spectroscopy. Thermoreflectance is a modulation technique relying on periodic facet…

Materials Science · Physics 2015-05-13 D. Pierscinska , K. Pierscinski , M. Bugajski , J. W. Tomm

Plasmon lasers create and sustain intense and coherent optical fields below light's diffraction limit with the unique ability to drastically enhance light-matter interactions bringing fundamentally new capabilities to bio-sensing, data…

Optics · Physics 2015-05-18 Ren-Min Ma , Rupert F Oulton , Volker J Sorger , Xiang Zhang