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We demonstrated a frequency offset locking between two laser sources using a waveguide-type electro-optic modulator (EOM) with 10th-order sidebands for magneto-optical trapping of Fr atoms. The frequency locking error signal was…

We demonstrate the use of a flexible digital servo system for the optical stabilization of both the repetition rate and carrier-envelope offset frequency of a laser frequency comb. The servo system is based entirely on a low-cost field…

Instrumentation and Detectors · Physics 2019-08-27 Jonah Shaw , Connor Fredrick , Scott Diddams

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

Two cw single-mode violet (397nm) diode lasers are locked to a single external-cavity master diode laser by optical injection locking. A double-pass 1.6GHz acousto-optic modulator is used to provide a 3.2GHz offset frequency between the two…

Optics · Physics 2014-02-25 B. C. Keitch , N. R. Thomas , D. M. Lucas

We report on the development of a frequency modulatable 795 nm semiconductor laser based on self-injection locking to a high quality factor whispering gallery mode microresonator. The laser is characterized with residual amplitude…

We demonstrate a technique to lock the frequency of a laser to a transition between two excited states in Rb vapor in the presence of a weak magnetic field. We use a ladder configuration from specific hyperfine sublevels of the 5S 1/2, 5P…

Optics · Physics 2015-05-13 F. E. Becerra , R. T. Willis , S. L. Rolston , L. A. Orozco

We present a new method of laser frequency locking in which the feedback signal is directly proportional to the detuning from an atomic transition, even at detunings many times the natural linewidth of the transition. Our method is a form…

Atomic Physics · Physics 2009-11-10 A. Ratnapala , C. J. Vale , A. G. White , M. D. Harvey , N. Heckenberg , H. Rubinsztein-Dunlop

We show, both experimentally and theoretically, that a slave laser injected with an optical frequency comb can undergo two distinct locking mechanisms, both of which decrease the output optical comb's frequency spacing. We report that, for…

We report on the design, implementation and characterization of fully digital control loops for laser frequency stabilization, differential phase-locking and performance optimization of the optical metrology system on-board the LISA…

We present absolute frequency measurements of a laser stabilized using an offset sideband locking technique on the P(49)24-1 rovibrational transition of $^{127}\mathrm{I}_2$ near 556 nm. The P(49)24-1 transition is offset by 4.8 GHz from…

Instrumentation and Detectors · Physics 2025-03-18 Martin Hauden , Jacques Millo , Martina Matusko , Francisco S Ponciano Ojeda , Yann Kersalé , Marion Delehaye

We present a compact all-digital implementation of a scanning transfer cavity lock (STCL) for long-term laser frequency stabilization. An interrupt-driven state machine is employed to realize the STCL, with the capability to correct for…

Instrumentation and Detectors · Physics 2019-04-24 S. Subhankar , A. Restelli , Y. Wang , S. L. Rolston , J. V. Porto

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

Achieving precise and adjustable control over laser frequency is an essential requirement in numerous applications such as precision spectroscopy, quantum control, and sensing. In many such applications it is desired to stabilize a laser…

Applied Physics · Physics 2024-05-22 Heleni Krelman , Ori Nefesh , Kfir Levi , Douglas G. Bopp , Songbai Kang , John E. Kitching , Liron Stern

We present and characterize a laser system for the spectroscopy on highly-charged ^209Bi^82+ ions at a wavelength of 243.87 nm. For absolute frequency stabilization, the laser system is locked to a near-infra-red laser stabilized to a…

Atomic Physics · Physics 2012-09-12 S. Albrecht , S. Altenburg , C. Siegel , N. Herschbach , G. Birkl

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 method for accurately locking the frequency of a continuous-wave laser to an optical frequency comb in conditions where the signal-to-noise ratio is low, too low to accommodate other methods. Our method is typically orders…

We present a laser frequency stabilization system that uses a transfer interferometer to stabilize slave lasers to a reference laser. Our implementation uses off-the-shelf optical components along with microcontroller-based digital…

Atomic Physics · Physics 2018-03-23 Shira Jackson , Hiromitsu Sawaoka , Nishant Bhatt , Shreyas Potnis , Amar C. Vutha

We propose and demonstrate a laser frequency stabilization scheme which generates a dispersion-like tunable Doppler-free dichroic lock (TDFDL) signal. This signal offers a wide tuning range for lock point (i.e. zero-crossing) without…

Atomic Physics · Physics 2016-08-24 Vivek Singh , V. B. Tiwari , S. R. Mishra , H. S. Rawat

A dichroic atomic vapor laser lock (DAVLL) system exploiting buffer-gas-filled millimeter-scale vapor cells is presented. This system offers similar stability as achievable with conventional DAVLL system using bulk vapor cells, but has…

Instrumentation and Detectors · Physics 2016-07-08 S. Pustelny , V. Schultze , T. Scholtes , D. Budker

We describe the injection locking of two infrared (794 nm) laser diodes which are each part of a frequency-doubled laser system. An acousto-optic modulator (AOM) in the injection path gives an offset of 1.6 GHz between the lasers for…

Atomic Physics · Physics 2015-06-17 N. M. Linke , C. J. Ballance , D. M. Lucas