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Laser-frequency stabilization with on-chip photonic integrated circuits will provide compact, low cost solutions to realize spectrally pure laser sources. Developing high-performance and scalable lasers is critical for applications…

We describe an apparatus for the stabilization of laser frequencies that prevents long term frequency drifts. A Fabry-Perot interferometer is thermostated by referencing it to a stabilized He-Ne laser (master), and its length is scanned…

Instrumentation and Detectors · Physics 2013-09-02 A. Rossi , V. Biancalana. B. Mai , L. Tomassetti

We demonstrate a technique for locking the frequency of a tunable diode laser to a ring-cavity resonator. The resonator is stabilized to a diode laser which is in turn locked to an atomic transition, thus giving it absolute frequency…

Optics · Physics 2009-11-07 Ayan Banerjee , Dipankar Das , Umakant D. Rapol , Vasant Natarajan

This article theoretically proposes a new dual interferometer technique to accurately calibrate two laser frequencies simultaneously using four-wave mixing in an alkali metal vapor cell. The two frequency-calibrated lasers are mixed to…

Atomic Physics · Physics 2025-07-08 Sreeshna Subhash , Greeshma Gopinath , Sankar Davuluri

We have studied the temporal behavior of the atomic absorption signal under resonant excitation with a continuous-wave laser radiation. Measurements done for D2 line of 85Rb with ~ 1 ns temporal resolution have shown irregular oscillatory…

Atomic Physics · Physics 2020-12-02 Aram Papoyan , Svetlana Shmavonyan

We demonstrate a new simple technique to measure IR frequencies near 30 THz using a femtosecond (fs) laser optical comb and sum-frequency generation. The optical frequency is directly compared to the distance between two modes of the fs…

We have developed, assembled, and flight-proven a stable, compact, and autonomous extended cavity diode laser (ECDL) system designed for atomic physics experiments in space. To that end, two micro-integrated ECDLs at 766.7 nm were frequency…

The resonant modes of optical cavities provide a powerful resource for laser-frequency stabilization, underpinning high-precision metrology and coherent signal generation. Photonic resonators in which the optical mode propagates through…

Optics · Physics 2026-02-12 Lindell M. Williams , Grant M. Brodnik , Scott B. Papp

Robust laser delivery and stabilization are key components in atom-based quantum technologies, such as quantum computing. Moving these technologies towards product-like deployment requires scalable, compact, cost-effective, and upgradable…

We present a scheme for stabilizing multiple lasers at wavelengths between 795 and 866 nm to the same atomic reference line. A reference laser at 852 nm is stabilized to the Cs D2 line using a Doppler-free frequency modulation technique.…

Quantum Physics · Physics 2015-05-14 F. Rohde , M. Almendros , C. Schuck , J. Huwer , M. Hennrich , J. Eschner

We describe laser systems for photoionization, Doppler cooling and quantum state manipulation of beryllium ions. For photoionization of neutral beryllium, we have developed a continuous-wave 235 nm source obtained by two stages of frequency…

We report on two ultrastable lasers each stabilized to independent silicon Fabry-P\'erot cavities operated at 124 K. The fractional frequency instability of each laser is completely determined by the fundamental thermal Brownian noise of…

Instrumentation and Detectors · Physics 2017-07-05 D. G. Matei , T. Legero , S. Häfner , C. Grebing , R. Weyrich , W. Zhang , L. Sonderhouse , J. M. Robinson , J. Ye , F. Riehle , U. Sterr

We demonstrate Faraday spectroscopy with high duty cycle and sampling rate using atoms confined to a blue-detuned optical trap. Our trap consists of a crossed pair of high-charge-number hollow laser beams, which forms a dark, box-like…

Quantum Physics · Physics 2009-11-13 Matthew L. Terraciano , Mark Bashkansky , Fredrik Fatemi

We present a solid-state laser system that generates over 200 mW of continuous-wave, narrowband light, tunable from 316.3 nm - 317.7 nm and 318.0 nm - 319.3 nm. The laser is based on commercially available fiber amplifiers and optical…

A far-infrared system measures the full complex Faraday angle, rotation as well as ellipticity, with an unprecedented accuracy of 10\,$\mu$rad/T. The system operates on several far-infrared laser lines in the spectral range from 0.3 to 6…

Strongly Correlated Electrons · Physics 2014-11-21 G. S. Jenkins , D. C. Schmadel , H. D. Drew

Quantum information processing using atomic qubits requires narrow linewidth lasers with long-term stability for high fidelity coherent manipulation of Rydberg states. In this paper, we report on the construction and characterization of…

Atomic Physics · Physics 2018-03-23 R. Legaie , C. J. Picken , J. D. Pritchard

We demonstrate a compact fibre-based laser system at 2.05 microns stabilized to a CO2 transition using frequency modulation spectroscopy of a gas-filled hollow-core fibre. The laser exhibits an absolute frequency accuracy of 5 MHz, a…

Instrumentation and Detectors · Physics 2016-03-02 Philip G. Westergaard , Jan W. Thomsen , Martin R. Henriksen , Mattia Michieletto , Marco Triches , Jens K. Lyngsø , Jan Hald

We use the Ramsey separated oscillatory fields (SOF) technique in a $400^\circ$C thermal beam of Yb atoms to measure the Larmor precession frequency with high precision. For the experiment, we use the strongly-allowed ${^1S_0} \rightarrow…

Atomic Physics · Physics 2015-10-08 K. D. Rathod , Vasant Natarajan

In this paper, we present a technique for magneto-optical cooling and trapping of neutral atoms using a single laser. The alternating-frequency magneto-optical trap (AF-MOT) uses an agile light source that sequentially switches between…

Atomic Physics · Physics 2019-10-15 B. Wiegand , B. Leykauf , K. Döringshoff , Y. D. Gupta , A. Peters , M. Krutzik

Laser phase noise remains a limiting factor in many experimental settings, including metrology, time-keeping, as well as quantum optics. Hitherto this issue was addressed at low frequencies, ranging from well below 1 Hz to maximally 100…

Optics · Physics 2021-03-31 Michał Parniak , Ivan Galinskiy , Timo Zwettler , Eugene S. Polzik