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Hybrid integrated diode lasers based on combining semiconductor optical amplifiers with low-loss Si3N4-based feedback circuits enable great laser performance for advanced photonic circuits. In particular, using high-Q Si3N4 ring resonators…

We demonstrate a high-stability laser offset-frequency locking technique based on a balanced filter discriminator. The beat note between two 852 nm external-cavity diode lasers is down-converted in two parallel arms using local-oscillator…

In this letter, we demonstrate a technique of making an ultrastable laser referenced to a multi-cavity, corresponding to a lower thermal noise limit due to the larger equivalent beam size. The multi-cavity consists of several pairs of…

Instrumentation and Detectors · Physics 2018-02-07 Zhaoyang Tai , Lulu Yan , Yanyan Zhang , Pan Zhang , Xiaofei Zhang , Wenge Guo , Shougang Zhang , Haifeng Jiang

We describe the short-term frequency stability characterization of external-cavity diode lasers stabilized onto the 6S$_{1/2}$-7P$_{1/2}$ transition of Cs atom at 459 nm, using a microfabricated vapor cell. The laser beatnote between two…

Atomic Physics · Physics 2025-01-31 E. Klinger , C. M. Rivera-Aguilar , A. Mursa , Q. Tanguy , N. Passilly , R. Boudot

Frequency-stabilized mid-infrared lasers are valuable tools for precision molecular spectroscopy. However, their implementation remains limited by complicated stabilization schemes. Here we achieve optical self-locking of a quantum cascade…

Optics · Physics 2021-06-29 Gang Zhao , Jianfei Tian , Joseph T. Hodges , Adam J. Fleisher

We analyse the limitation of the amplitude modulation rejection due to the spatial modulation of the output beam of an acousto-optic modulator used in an active laser beam stabilisation system when a frequency modulation of a few megahertz…

Quantum Physics · Physics 2016-08-16 Frédéric Du Burck , Assia Tabet , Olivier Lopez

Ultra-stable lasers and optical frequency combs have been the enabling technologies for the tremendous progress of precise optical spectroscopy in the last ten years. To improve laser frequency stabilization beyond the thermal-noise…

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 describe the design and operation of a high-stability Fabry-Perot cavity, for laser stabilization in cavity quantum-electrodynamics experiments. Our design is based on an inexpensive and readily available uniaxial carbon-fiber reinforced…

This paper describes the Light-Shift Laser-Lock (LSLL) technique, a novel method intended for compact atomic clocks that greatly simplifies the laser setup by stabilizing the pumping-laser frequency to the atoms involved in the clock,…

Atomic Physics · Physics 2024-04-23 Claudio E. Calosso , Michele Gozzelino , Filippo Levi , Salvatore Micalizio

We demonstrate the long-distance transmission of an ultra-stable optical frequency derived directly from a state-of-the-art optical frequency standard. Using an active stabilization system we deliver the frequency via a 146 km long…

Optics · Physics 2016-04-13 G. Grosche , O. Terra , K. Predehl , R. Holzwarth , B. Lipphardt , F. Vogt , U. Sterr , H. Schnatz

We present a modular rack-mounted laser system for the cooling and manipulation of neutral rubidium atoms which has been developed for a portable gravimeter based on atom interferometry that will be capable of performing high precision…

Atomic Physics · Physics 2015-05-19 Malte Schmidt , Marco Prevedelli , Antonio Giorgini , Guglielmo M. Tino , Achim Peters

Self-injection locking of a diode laser to a high-quality-factor microresonator is widely used for frequency stabilization and linewidth narrowing. We constructed several microresonator-based laser sources with measured instantaneous…

Wavelength stability of free-electron lasers (FELs) is one of the important parameters for various applications. In this paper we describe two different methods to diagnose the wavelength stability of a mid-infrared (MIR) FEL. The first one…

Optical frequency transfer provides the means for high-fidelity frequency transfer across thousands of kilometers. A critical step in the further developing optical frequency transfer is its capability to transfer a high spectral purity…

Instrumentation and Detectors · Physics 2021-02-25 Liang Hu , Xueyang Tian , Long Wang , Guiling Wu , Jianping Chen

We present an ultrahigh-$Q$, solid-silica microrod resonator operated under ambient conditions that supports laser-fractional-frequency stabilization to the thermal-noise limit of $3 \times 10^{-13}$ and a linewidth of 62 Hz. We…

Instrumentation and Detectors · Physics 2019-08-14 Wei Zhang , Fred Baynes , Scott A. Diddams , Scott B. Papp

A recently proposed device, dubbed half-Josephson laser, provides a phase-lock between the optical phase and the superconducting phase difference between the leads of the device. In this paper we propose to utilize this phase-lock for…

Mesoscale and Nanoscale Physics · Physics 2013-08-26 F. Godschalk , Yu. V. Nazarov

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 fiber laser is stabilized using a Calcium Fluoride (CaF2) whispering-gallery-mode resonator. It is set up using a semiconductor optical amplifier as a gain medium. The resonator is critically coupled through prisms, and used as a…

Optics · Physics 2012-08-02 B. Sprenger , H. G. L. Schwefel , Z. H. Lu , S. Svitlov , L. J. Wang

The frequency stability of lasers is limited by thermal noise in state-of-the-art frequency references. Further improvement requires operation at cryogenic temperature. In this context, we investigate a fiber-based ring resonator. Our…

Optics · Physics 2021-01-22 Benjamin Merkel , Daniel Repp , Andreas Reiserer
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