Hyperfine Structure Measurement of Rubidium Atom and Tunable Diode Laser Stabilization by Using Sagnac Interferometer

2006 ◽  
Vol 6 (11) ◽  
pp. 3559-3561
Author(s):  
Jin-Tae Kim ◽  
Liu Zhen ◽  
Venedikt Kapitanov ◽  
Hyun Su Kim ◽  
Jong Rak Park ◽  
...  
Keyword(s):  
Hyperfine Structure ◽  
Frequency Tuning ◽  
Free Spectral Range ◽  
Laser Frequency ◽  
Tunable Diode Laser ◽  
Sagnac Interferometer ◽  
Laser Stabilization ◽  
Saturation Spectroscopy ◽  
Rubidium Atom ◽  
Fabry Perot

The Rubidium saturated absorption spectra for D2 transition lines are used to measure the Fabry-Perot interferometer free spectral range (FSR). The scale linearity of the laser frequency tuning is determined. The Sagnac interferometer has been used for the laser stabilization. The result shows that the laser frequency is stabilized upto sub-mega Herz level. Also the hyperfine structure [52S1/2 F = 3 → F′ = 2, 3, 4 52P3/2 85Rb] of the rubidium atom has been measured by using the tilt locking method, which shows the same result as the conventional saturation spectroscopy.

Hyperfine Structure Measurement of Rubidium Atom and Tunable Diode Laser Stabilization by Using Sagnac Interferometer

2006 ◽  
Vol 6 (11) ◽  
pp. 3559-3561 ◽  
Author(s):  
Jin-Tae Kim ◽  
Liu Zhen ◽  
Venedikt Kapitanov ◽  
Hyun Su Kim ◽  
Jong Rak Park ◽  
...  
Keyword(s):  
Hyperfine Structure ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Sagnac Interferometer ◽  
Laser Stabilization ◽  
Rubidium Atom ◽  
Structure Measurement

Fourier Transform Raman and Brillouin Spectroscopy Using Atomic Vapor Filters

1994 ◽  
Vol 48 (7) ◽  
pp. 843-847 ◽  
Author(s):  
P. J. Horoyski ◽  
M. L. W. Thewalt
Keyword(s):  
Fourier Transform ◽  
Brillouin Scattering ◽  
Free Spectral Range ◽  
Scattered Light ◽  
Metal Vapor ◽  
Laser Frequency ◽  
Vapor Cell ◽  
Fabry Perot ◽  
Single Instrument ◽  
First Time

This paper presents Raman and Brillouin scattering measurements obtained with a Fourier transform interferometer, in which the laser light rejection was provided by an alkali-metal vapor cell. The narrow absorption band of the vapor cell allowed for the detection of energy shifts as low as 0.85 cm−1(∼26 GHz) while completely blocking scattered light at the laser frequency. Since, unlike a Fabry-Perot interferometer, a Fourier transform interferometer does not have a free spectral range placing an upper bound on the energy shifts which it can detect without ambiguity, the energy regimes of both Brillouin and Raman scattering are for the first time accessible with a single instrument.

scholarly journals Controlling and Phase‐Locking a THz Quantum Cascade Laser Frequency Comb by Small Optical Frequency Tuning

2021 ◽  
pp. 2000417
Author(s):  
Luigi Consolino ◽  
Annamaria Campa ◽  
Michele De Regis ◽  
Francesco Cappelli ◽  
Giacomo Scalari ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Frequency Tuning ◽  
Frequency Comb ◽  
Phase Locking ◽  
Laser Frequency ◽  
Optical Frequency ◽  
Quantum Cascade

Isotope shift and hyperfine structure in the atomic spectrum of tin

1973 ◽  
Vol 332 (1588) ◽  
pp. 129-138 ◽  
Keyword(s):  
Stable Isotopes ◽  
Hyperfine Structure ◽  
Nuclear Charge ◽  
Light Sources ◽  
Atomic Spectrum ◽  
Nuclear Charge Distribution ◽  
Fabry Perot ◽  
Self Consistent ◽  
Structure Constants ◽  
Good Agreement

Three lines in the atomic spectrum of tin, λ 3262 Å, λ 3283 Å and λ 6454Å have been studied in emission under high resolution with the use of light sources containing enriched isotopic samples. Results are reported for isotope shifts in these lines for the abundant stable isotopes ( A ≽ 116). Pressure-scanned Fabry–Perot etalons provided the necessary resolution; the spectrograms for λ 6454 Å were recorded and analysed by digital techniques, and for this line hyperfine structure constants required in the interpretation of the data were also evaluated. The results for the three lines are not in good agreement with earlier work, but are shown to be self-consistent by means of a King plot. Their interpretation in terms of the nuclear charge distribution is considered in the following paper.

A Structure Nondestructive Evaluation Using Laser-Generated Ultrasonic Application

2004 ◽  
Vol 261-263 ◽  
pp. 1367-1372
Author(s):  
Jae Yeol Kim ◽  
S.U. Yoon ◽  
Kyeung Cheun Jang ◽  
Myung Soo Ko ◽  
Jae Sin An
Keyword(s):  
Light Beam ◽  
Laser Frequency ◽  
Test Material ◽  
Time Shift ◽  
Ultrasonic Signals ◽  
Fabry Perot ◽  
Convex Mirror ◽  
Type Size ◽  
Pulse Type ◽  
Stable Frequency

In the present study, a Nd;YAG Laser (pulse type) was used to emit ultrasonic signals to a test material. In addition, a total ultrasonic investigation system was designed by adopting a Fabry-Perot interferometer, which receives ultrasonic signals without any contact. For non-destructive test SM45C, which contains some flaws was used as a test material. Because it is easy to align light beam in receiver, and the length of the light beam does not change much even if convex mirror leans towards one side, confocal Fabry-Perot interferometer, which has stable frequency, and PI control are used to correct interfered and unstable signals from temperature, fluctuation and time shift of laser frequency. Stable signals are always obtained by the feedback of PI circuit signals in the confocal Fabry-Perot interferometer. The type, size and position of flaws inside the test material were examined by achieving the stabilization of an interferometer. This study presented a useful method, which could quantitatively investigate the fault of objects by using a Fabry-Perot interferometer.

Frequency Stabilization of the Diode Laser to the Extra Reference Cavity

2012 ◽  
Vol 198-199 ◽  
pp. 1235-1240
Author(s):  
Xiao Dong Liu ◽  
Hai Dong Lei ◽  
Jian Jun Zhang
Keyword(s):  
Semiconductor Laser ◽  
Diode Laser ◽  
Laser Frequency ◽  
Frequency Stabilization ◽  
Resonance Peak ◽  
Experimental Setup ◽  
Laser Frequency Stabilization ◽  
Reference Cavity ◽  
Fabry Perot ◽  
Important Study

The Semiconductor laser frequency stabilization is the important study topic because of its increasing popular. We introduce a simply experimental setup method of the frequency stabilization of a 780 nm diode laser by only a tiny current in the laser audio modulation, photodiode receiver, and locking the transmission peaks. Use this method, the laser can be locked to the resonance peak of the Fabry-Perot cavity. The linewidth of laser is below 400 kHz, and it runs continually above 3 hours.

Optical measurement of the free spectral range and spacing of plane and confocal Fabry-Perot interferometers

1990 ◽  
Vol 29 (1) ◽  
pp. 42 ◽  
Author(s):  
Helmut Jaeger ◽  
Maurizio Musso ◽  
Christian Neureiter ◽  
Laurentius Windholz
Keyword(s):  
Spectral Range ◽  
Optical Measurement ◽  
Free Spectral Range ◽  
Fabry Perot
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