Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:1711.06676

Sidebands suppression of 852 nm Cesium Faraday anomalous dispersion optical filter by argon gas

Junyu Xiong, Longfei Yin, Bin Luo, Jingbiao Chen, Hong Mei Guo

Published Nov 14, 2017• 2 citations
arXivHTMLPDF

Abstract

In this work, sidebands suppression brought by buffer gas argon (Ar) in cesium Faraday anomalous dispersion optical filter (FADOF) at 852 nm is investigated. FADOF performances at different Ar pressures (0 torr, 1 torr, 5 torr and 10 torr) are compared, and a single-peak transmittance spectrum with peak transmittance up to 80% is achieved at the high Ar pressure. A detailed analysis shows that, this sidebands suppression comes from the depopulation enhancement by the buffer gas. This result can be generalized to other FADOFs with similar level structures such as the D2 lines of other alkali metal atoms.

DOI
10.48550/arxiv.1711.06676

Related papers

The Characteristics of Ar and Cs Mixed Faraday Optical Filter Under Different Signal Powers

Junyu Xiong, Bin Luo, Longfei Yin +2 more

The characteristics of the 852 nm cesium Faraday anomalous dispersion optical filter with Ar-filled cesium cell under different signal powers are investigated. The transmittance spectra are measured by changing the input laser power from 0.05 to 10 mW (the irradiance from 12.03 to 2406.88 W/m2) and the buffer gas pressure from 1 to 10 torr. The spectra without the buffer gas are also measured. The results reveal the entirely different variations of the transmittance spectra for the cells with and without the buffer gas. For the cell without the buffer gas, the sidebands of the spectrum get higher and the bandwidth is broadened as the input power increases. However, for the cell with the buffer gas, the sidebands are suppressed and the bandwidth is reduced. A single-peak transmittance spectrum will be formed eventually. These phenomena are remarkable at relatively high pressures of Ar (5 and 10 torr), which may be very suitable for applications such as Faraday laser, optical frequency standard, laser frequency stabilization, and laser locking. The sidebands of the spectrum can also be used to restrict the high input laser power which may cause damage to the system.

IEEE Photonics Technology Letters•Mar 8, 2018•12 citations

Cesium faraday anomalous dispersion optical filter with buffer gas

Junyu Xiong, Longfei Yin, Hong Mei Guo +1 more

We report a cesium Faraday anomalous dispersion optical filter (FADOF), of which the atom vapor cell is filled with argon as buffer gas. The result shows that, with the help of buffer gas, the sidebands of the FADOF are removed and a transmittance spectrum with one single peak is realized.

Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)•May 1, 2016•1 citation

Faraday anomalous dispersion optical filter with a single transmission peak using a buffer-gas-filled rubidium cell

Xiaobo Xue, Zhiming Tao, Qinqing Sun +5 more

A Faraday anomalous dispersion optical filter (FADOF) with a single transmission peak is achieved by using a buffer-gas (argon, 2 Torr)-filled rubidium cell. At room temperature, the transmission is 0.2% and the bandwidth of the transmission peak is 0.65 GHz. At a temperature of 63° C, the transmission rises to a maximum of 30.6%, with a bandwidth of 1.41 GHz. This FADOF may replace the use of interference filters or virtually imaged phased arrays in imaging modalities.

Optics Letters•Jun 7, 2012•23 citations

Demonstration of Faraday anomalous dispersion optical filter with reflection configuration

Yi Liu, Baodong Yang, Junmin Wang +3 more

Abstract A narrow linewidth Faraday anomalous dispersion optical filter (FADOF) with reflection configuration is achieved for the first time based on the cesium (Cs) ground state 6S1/2 to the excited state 6P3/2 transition at 852 nm. Compared with the conventional FADOF with transmission configuration, reflection-type FADOF can greatly improve the transmittance of optical filter under the same experimental parameters, because it allows signal light to go and return through the atomic vapor cell. In our experiment, peak transmittance at Cs 6S1/2 F = 4–6P3/2 transition is 81% for the reflection-type FADOF, and while 54% for the transmission-type FADOF when the temperature of Cs vapor cell and the axial magnetic field are 60 °C and 19 G. The idea of this reflection-type FADOF design has the potential to be applied to the FADOF operating between two excited states to obtain higher transmittance.

Chinese Physics B•Sep 1, 2021•10 citations

Hollow cathode lamp based Faraday anomalous dispersion optical filter

Duo Pan, Xiaobo Xue, Haosen Shang +3 more

The Faraday anomalous dispersion optical filter (FADOF), which has acquired wide applications, is mainly limited to some gaseous elements and low melting-point metals before, for the restriction of the attainable atomic density. In conventional FADOF systems a high atomic density is usually achieved by thermal equilibrium at the saturated vapor pressure, hence for elements with high melting-points a high temperature is required. To avoid this restriction, we propose a scheme of FADOF based on the hollow cathode lamp (HCL), instead of atomic vapor cells. Experimental results in strontium atoms verified this scheme, where a transmission peak corresponding to the (88)Sr (5s(2))(1)S0 - (5s5p)(1)P1 transition (461 nm) is obtained, with a maximum transmittance of 62.5% and a bandwith of 1.19 GHz. The dependence of transmission on magnetic field and HCL discharge current is also studied. Since the state-of-art commercial HCLs cover about 70 elements, this scheme can greatly expand the applications of FADOFs, and the abundant atomic transitions they provide bring the HCL based FADOFs potential applications for frequency stabilization.

Scientific Reports•Jul 15, 2016•24 citations

Faraday anomalous dispersion optical filter at ^133Cs weak 459 nm transition

Xiaobo Xue, Duo Pan, Xiaogang Zhang +3 more

A 459 nm Faraday anomalous dispersion optical filter (FADOF) working at the side wings of the cesium 6S1/2→7P1/2 transition with weak oscillator strength is achieved. The transmittance of the higher side wing reaches 98% at a temperature of 179°C and magnetic field above 323 G. The experimental results coincide with the theoretical predictions in 1982 and 1995, which were not realized in experiments for over three decades. Due to its high transmittance, high accuracy, and narrow linewidth, the 459 nm FADOF can be applied in underwater optical communications, the building of active optical clocks, and laser frequency stabilization in active optical clocks.

Photonics Research•Sep 11, 2015•17 citations
In this work, sidebands suppression brought by buffer gas argon (Ar) in cesium Faraday anomalous dispersion optical filter (FADOF) at 852 nm is investigated. FADOF performances at different Ar pressures (0 torr, 1 torr, 5 torr and 10 torr) are compared, and a single-peak transmittance spectrum with peak transmittance up to 80% is achieved at the high Ar pressure. A detailed analysis shows that, this sidebands suppression comes from the depopulation enhancement by the buffer gas. This result can be generalized to other FADOFs with similar level structures such as the D2 lines of other alkali metal atoms.
The characteristics of the 852 nm cesium Faraday anomalous dispersion optical filter with Ar-filled cesium cell under different signal powers are investigated. The transmittance spectra are measured by changing the input laser power from 0.05 to 10 mW (the irradiance from 12.03 to 2406.88 W/m2) and the buffer gas pressure from 1 to 10 torr. The spectra without the buffer gas are also measured. The results reveal the entirely different variations of the transmittance spectra for the cells with and without the buffer gas. For the cell without the buffer gas, the sidebands of the spectrum get higher and the bandwidth is broadened as the input power increases. However, for the cell with the buffer gas, the sidebands are suppressed and the bandwidth is reduced. A single-peak transmittance spectrum will be formed eventually. These phenomena are remarkable at relatively high pressures of Ar (5 and 10 torr), which may be very suitable for applications such as Faraday laser, optical frequency standard, laser frequency stabilization, and laser locking. The sidebands of the spectrum can also be used to restrict the high input laser power which may cause damage to the system.
Abstract A narrow linewidth Faraday anomalous dispersion optical filter (FADOF) with reflection configuration is achieved for the first time based on the cesium (Cs) ground state 6S1/2 to the excited state 6P3/2 transition at 852 nm. Compared with the conventional FADOF with transmission configuration, reflection-type FADOF can greatly improve the transmittance of optical filter under the same experimental parameters, because it allows signal light to go and return through the atomic vapor cell. In our experiment, peak transmittance at Cs 6S1/2 F = 4–6P3/2 transition is 81% for the reflection-type FADOF, and while 54% for the transmission-type FADOF when the temperature of Cs vapor cell and the axial magnetic field are 60 °C and 19 G. The idea of this reflection-type FADOF design has the potential to be applied to the FADOF operating between two excited states to obtain higher transmittance.
The Faraday anomalous dispersion optical filter (FADOF), which has acquired wide applications, is mainly limited to some gaseous elements and low melting-point metals before, for the restriction of the attainable atomic density. In conventional FADOF systems a high atomic density is usually achieved by thermal equilibrium at the saturated vapor pressure, hence for elements with high melting-points a high temperature is required. To avoid this restriction, we propose a scheme of FADOF based on the hollow cathode lamp (HCL), instead of atomic vapor cells. Experimental results in strontium atoms verified this scheme, where a transmission peak corresponding to the (88)Sr (5s(2))(1)S0 - (5s5p)(1)P1 transition (461 nm) is obtained, with a maximum transmittance of 62.5% and a bandwith of 1.19 GHz. The dependence of transmission on magnetic field and HCL discharge current is also studied. Since the state-of-art commercial HCLs cover about 70 elements, this scheme can greatly expand the applications of FADOFs, and the abundant atomic transitions they provide bring the HCL based FADOFs potential applications for frequency stabilization.
A 459 nm Faraday anomalous dispersion optical filter (FADOF) working at the side wings of the cesium 6S1/2→7P1/2 transition with weak oscillator strength is achieved. The transmittance of the higher side wing reaches 98% at a temperature of 179°C and magnetic field above 323 G. The experimental results coincide with the theoretical predictions in 1982 and 1995, which were not realized in experiments for over three decades. Due to its high transmittance, high accuracy, and narrow linewidth, the 459 nm FADOF can be applied in underwater optical communications, the building of active optical clocks, and laser frequency stabilization in active optical clocks.