Locking multi-laser frequencies to a precision wavelength meter: Application to cold atoms

Junwoo Kim; Keumhyun Kim; Dowon Lee; Yongha Shin; Sungsam Kang; Jung Ryul Kim; Youngwoon Choi; Kyungwon An; Moonjoo Lee

doi:10.3390/s21186255

Locking multi-laser frequencies to a precision wavelength meter: Application to cold atoms

Junwoo Kim, Keumhyun Kim, Dowon Lee, Yongha Shin, Sungsam Kang, Jung Ryul Kim, Youngwoon Choi, Kyungwon An, Moonjoo Lee

School of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find σ_y = 10⁻¹² at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of⁸⁷Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.

Original language	English
Article number	6255
Journal	Sensors
Volume	21
Issue number	18
DOIs	https://doi.org/10.3390/s21186255
Publication status	Published - 2021 Sept

Keywords

External cavity diode laser
Laser frequency stabilization
Wavelength meter

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Biochemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Electrical and Electronic Engineering

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10.3390/s21186255

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title = "Locking multi-laser frequencies to a precision wavelength meter: Application to cold atoms",

abstract = "We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find σy = 10−12 at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of87Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.",

keywords = "External cavity diode laser, Laser frequency stabilization, Wavelength meter",

author = "Junwoo Kim and Keumhyun Kim and Dowon Lee and Yongha Shin and Sungsam Kang and Kim, {Jung Ryul} and Youngwoon Choi and Kyungwon An and Moonjoo Lee",

note = "Funding Information: This work has been supported by National Research Foundation with the Grant No. 2019R1A5A102705513, 2020M3E4A10786711, 2020R1l1A2066622, and 2021M3E4A103853411, BK21 FOUR program, Samsung Electronics Co., Ltd. (IO201211-08121-01), Samsung Science and Technology Foundation (SSTF-BA2101-07 and SRFC-TC2103-01). K. An was supported by the National Research Foundation (Grant No. 2020R1A2C3009299). Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = sep,

doi = "10.3390/s21186255",

language = "English",

volume = "21",

journal = "Sensors (Switzerland)",

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T2 - Application to cold atoms

AU - Kim, Junwoo

AU - Kim, Keumhyun

AU - Lee, Dowon

AU - Shin, Yongha

AU - Kang, Sungsam

AU - Kim, Jung Ryul

AU - Choi, Youngwoon

AU - An, Kyungwon

AU - Lee, Moonjoo

N1 - Funding Information: This work has been supported by National Research Foundation with the Grant No. 2019R1A5A102705513, 2020M3E4A10786711, 2020R1l1A2066622, and 2021M3E4A103853411, BK21 FOUR program, Samsung Electronics Co., Ltd. (IO201211-08121-01), Samsung Science and Technology Foundation (SSTF-BA2101-07 and SRFC-TC2103-01). K. An was supported by the National Research Foundation (Grant No. 2020R1A2C3009299). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/9

Y1 - 2021/9

N2 - We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find σy = 10−12 at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of87Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.

AB - We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock performance is characterized by the Allan deviation measurement in which we find σy = 10−12 at an averaging time of 1000 s. We also obtain spectral profiles through a heterodyne spectroscopy, identifying the contribution of white and flicker noises to the laser linewidth. The frequency drift of the WLM is measured to be about 2.0(4) MHz over 36 h. Utilizing the two lasers as a cooling and repumping field, we demonstrate a magneto-optical trap of87Rb atoms near a high-finesse optical cavity. Our laser stabilization technique operates at broad wavelength range without a radio frequency element.

KW - External cavity diode laser

KW - Laser frequency stabilization

KW - Wavelength meter

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Locking multi-laser frequencies to a precision wavelength meter: Application to cold atoms

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Keywords

ASJC Scopus subject areas

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