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Studying a single atomic ion confined in a time-dependent periodic anharmonic potential, we find large amplitude trajectories stable for millions of oscillation periods in the presence of stochastic laser cooling. The competition between…

Atomic Physics · Physics 2019-08-28 A. Maitra , D. Leibfried , D. Ullmo , H. Landa

The stabilization of lasers to absolute frequency references is a fundamental requirement in several areas of atomic, molecular and optical physics. A range of techniques are available to produce a suitable reference onto which one can…

Atomic Physics · Physics 2017-09-20 Matthew Aldous , Jonathan Woods , Andrei Dragomir , Ritayan Roy , Matt Himsworth

A comprehensive model for the photon number fluctuations and the current noise in quantum cascade lasers is presented. It is shown that the photon intensity noise in quantum cascade lasers exhibits little amplitude squeezing even when noise…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Farhan Rana , Rajeev J. Ram

Technical noise present in laser systems can limit their ability to perform high fidelity quantum control of atomic qubits. The ultimate fidelity floor for atomic qubits driven with laser radiation is due to spontaneous emission from…

Quantum Physics · Physics 2021-12-10 Matthew L Day , Pei Jiang Low , Brendan M White , Rajibul Islam , Crystal Senko

Lowering the noise level of short pulse lasers has been a long-standing effort for decades. Modeling the noise performance plays a crucial role in isolating the noise sources and reducing them. Modeling to date has either used analytical or…

Applied Physics · Physics 2018-10-17 Shaokang Wang , Thomas F. Carruthers , Curtis R. Menyuk

LISA is an array of three spacecraft flying in an approximately equilateral triangle configuration, which will be used as a low-frequency detector of gravitational waves. Recently a technique has been proposed for suppressing the phase…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Massimo Tinto , Malik Rakhmanov

Laser frequency stabilization is notably one of the major challenges on the way to a space-borne gravitational wave observatory. The proposed Laser Interferometer Space Antenna (LISA) is presently under development in an ESA, NASA…

General Relativity and Quantum Cosmology · Physics 2015-06-25 Markus Herz

We demonstrate a simple and robust technique for removal of the carrier wave from a phase-modulated laser beam, using a non-interferometric method that is insensitive to the modulation frequency and instead exploits the…

Atomic Physics · Physics 2015-06-04 Nathan Cooper , James Bateman , Alexander Dunning , Tim Freegarde

Atomic physics experiments commonly use millitesla-scale magnetic fields to provide a quantization axis. As atomic transition frequencies depend on the amplitude of this field, many experiments require a stable absolute field. Most setups…

Atomic Physics · Physics 2019-04-22 B. Merkel , K. Thirumalai , J. E. Tarlton , V. M. Schäfer , C. J. Ballance , T. P. Harty , D. M. Lucas

We demonstrate thermal-noise-limited direct locking of a semiconductor distributed feedback (DFB) laser to a sub-1 mL volume, ultrastable optical cavity, enabling extremely compact and simple ultrastable laser systems. Using the…

Laser plasma acceleration at kilohertz repetition rate has recently been shown to work in two different regimes, with pulse lengths of either 30 fs or 3.5 fs. We now report on a systematic study in which a large range of pulse durations and…

We report on a design of a compact laser system composed of an extended cavity diode laser with high passive stability and a pre-filter Fabri-Perot cavity. The laser is frequency stabilized relative to the cavity using a serrodyne technique…

Quantum Gases · Physics 2015-05-20 Emil Kirilov , Manfred J. Mark , Maximilian Segl , Hanns-Christoph Nägerl

The self-amplified spontaneous emission (SASE) mechanism, the fundamental operating principle of numerous free-electron laser (FEL) facilities, is driven by electron beam shot noise and leads to significant fluctuations in the output pulse…

Accelerator Physics · Physics 2025-03-10 Huaiqian Yi , Xiaofan Wang , Li Zeng , Yifan Liang , Weiqing Zhang

We demonstrate the distribution of single-photon-level pulses from a mode-locked laser source over a phase-stable fiber link, achieving an optical timing jitter of less than 100 as over 10 minutes of data accumulation. This stability…

It is demonstrated that RF current modulation of a frequency stabilized injection-locked diode laser allows the stabilization of an optical cavity to adjustable lengths, by variation of the RF frequency. This transfer cavity may be used to…

Optics · Physics 2007-05-23 P. Bohlouli-Zanjani , K. Afrousheh , J. D. D. Martin

In this paper we present a technique for the precise measurement of electric dipole allowed transitions in trapped ions. By applying a probe and a cooling laser in quick succession, the full transition can be probed without causing…

Atomic Physics · Physics 2015-06-19 Amy Gardner , Kevin Sheridan , William Groom , Nicolas Seymour-Smith , Matthias Keller

This paper proposes an efficient method for the calculation of the stabilization parameters in RF power amplifiers operating in periodic large-signal regimes. Stabilization is achieved by applying the principles of linear control theory for…

Systems and Control · Electrical Eng. & Systems 2025-01-30 Libe Mori , Ibone Lizarraga , Aitziber Anakabe , Juan-Mari Collantes , Vincent Armengaud , Geoffroy Soubercaze-Pun

State-of-the-art optical oscillators based on lasers frequency stabilized to high finesse optical cavities are limited by thermal noise that causes fluctuations of the cavity length. Thermal noise represents a fundamental limit to the…

Optics · Physics 2015-03-19 T. Kessler , C. Hagemann , C. Grebing , T. Legero , U. Sterr , F. Riehle , M. J. Martin , L. Chen , J. Ye

Actively Q-switched lasers are widely used tools which are required to produce stable output pulse energies for many applications. In this paper, a model-based control concept for actively Q-switched lasers is presented which stabilises…

Systems and Control · Electrical Eng. & Systems 2023-04-17 Lukas Tarra , Andreas Deutschmann-Olek , Andreas Kugi

Stable laser sources at 461 nm are important for optical cooling of strontium atoms. In most existing experiments this wavelength is obtained by frequency doubling infrared lasers, since blue laser diodes either have low power or large…

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