Experimental stability diagram of a diode laser subject to weak phase-conjugate feedback from a rubidium vapor cell

1999 ◽  
Vol 35 (4) ◽  
pp. 577-582 ◽  
Author(s):  
O.K. Andersen ◽  
A.P.A. Fischer ◽  
I.C. Lane ◽  
E. Louvergneaux ◽  
S. Stolte ◽  
...  
Keyword(s):  
Diode Laser ◽  
Stability Diagram ◽  
Rubidium Vapor ◽  
Phase Conjugate ◽  
Vapor Cell ◽  
Weak Phase

scholarly journals A pulsed-Laser Rb atomic frequency standard for GNSS applications

GPS Solutions ◽  
2021 ◽  
Vol 25 (3) ◽  
Author(s):  
S. Micalizio ◽  
F. Levi ◽  
C. E. Calosso ◽  
M. Gozzelino ◽  
A. Godone
Keyword(s):  
Optical Pumping ◽  
Frequency Standard ◽  
Frequency Stability ◽  
Allan Deviation ◽  
Rubidium Vapor ◽  
Vapor Cell ◽  
Continuous Regime ◽  
Remarkable Result ◽  
Averaging Time ◽  
Consequent Improvement

AbstractWe present the results of 10 years of research related to the development of a Rubidium vapor cell clock based on the principle of pulsed optical pumping (POP). Since in the pulsed approach, the clock operation phases take place at different times, this technique demonstrated to be very effective in curing several issues affecting traditional Rb clocks working in a continuous regime, like light shift, with a consequent improvement of the frequency stability performances. We describe two laboratory prototypes of POP clock, both developed at INRIM. The first one achieved the best results in terms of frequency stability: an Allan deviation of σy(τ) = 1.7 × 10−13 τ−1/2, being τ the averaging time, has been measured. In the prospect of a space application, we show preliminary results obtained with a second more recent prototype based on a loaded cavity-cell arrangement. This clock has a reduced size and exhibited an Allan deviation of σy(τ) = 6 × 10−13 τ−1/2, still a remarkable result for a vapor cell device. In parallel, an ongoing activity performed in collaboration with Leonardo S.p.A. and aimed at developing an engineered space prototype of the POP clock is finally mentioned. Possible issues related to space implementation are also briefly discussed. On the basis of the achieved results, the POP clock represents a promising technology for future GNSSs.

scholarly journals Ellipsometric spectroscopy of rubidium vapor cell at near-normal incidence

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
M. Mosleh ◽  
M. Ranjbaran ◽  
S. M. Hamidi ◽  
M. M. Tehranchi
Keyword(s):  
Normal Incidence ◽  
Metal Vapor ◽  
Dipole Interaction ◽  
Transition Line ◽  
Rubidium Vapor ◽  
Vapor Cell ◽  
Atomic Vapors ◽  
Hyperfine Transitions ◽  
Reflected Light ◽  
Medium Change

Abstract Various efforts have been made to overcome Doppler broadening in hyperfine measurement limitations in the atomic vapors spectroscopy and associated applications. The present study measured and calculated hyperfine resolved ellipsometric parameters through the near-normal reflectance spectra of the rubidium vapor cell in two experimental setups based on continuous and modulated pathway. The results indicated that valuable information could be extracted from the ellipsometric parameters about the atomic medium. Change in the ellipsometric parameters in each transition line confirms the existence of the elliptical polarization of the reflected light when it is exposed to the alkali metal vapor. Our results show that the ellipticity at 5S1/2 (Fg = 1, 2) → 5P1/2 (Fe = 1, 2) hyperfine transitions of 87Rb (D1 line) is small, and accordingly hyperfine transitions between the ground 5S1/2 (Fg = 2, 3) and excited 5P1/2 (Fe = 2, 3) states of the 85Rb isotope are considerable. These ellipsometric parameters, as phase difference, can trace the behavior of the relative orientation of the electric field and atom velocity in the interface based on van der Waals dipole–dipole interaction and is directly proportional to the strength of the light-matter interaction which extremely useful instead complicated atomic spectroscopic methods.

Electromagnetically Induced Transparency in an Integrated Rubidium Vapor Cell

2009 ◽  
Author(s):  
Bin Wu ◽  
John F. Hulbert ◽  
Katherine Hurd ◽  
Mark Oehlberg ◽  
Aaron R. Hawkins ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Rubidium Vapor ◽  
Vapor Cell ◽  
Induced Transparency

Injection locking and mode switching of a diode laser with a double phase-conjugate mirror

1993 ◽  
Vol 18 (19) ◽  
pp. 1645 ◽  
Author(s):  
Tsutomu Shimura ◽  
Masayuki Tamura ◽  
Kazuo Kuroda
Keyword(s):  
Diode Laser ◽  
Injection Locking ◽  
Mode Switching ◽  
Phase Conjugate ◽  
Double Phase ◽  
Phase Conjugate Mirror
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