Demonstration of an optical polarization magnifier with low birefringence

Lintz, Michel; Guéna, Jocelyne; Bouchiat, Marie-Anne; Chauvat, Dominique

doi:10.1063/1.1879292

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…One of them is the so-called polarization pile method [9][10][11] , when the polarization attenuation of the light beam is achieved by transmitting it through a properly aligned polarization pile, see Fig. 2.…”

Section: Polarimetric Schemesmentioning

confidence: 99%

Resources of polarimetric sensitivity in spin noise spectroscopy

et al. 2013

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We attract attention to the fact that the ultimate (shot-noise-limited) polarimetric sensitivity can be enhanced by orders of magnitude leaving the photon flux incident onto the photodetector on the same low level. This opportunity is of crucial importance for present-day spin noise spectroscopy, where a direct increase of sensitivity by increasing the probe beam power is strongly restricted by the admissible input power of the broadband photodetectors. The gain in sensitivity is achieved by replacing the 45-deg polarization geometry commonly used in conventional schemes with balanced detectors by geometries with stronger polarization extinction. The efficiency of these high-extinction polarization geometries with enhancement of the detected signal by more than an order of magnitude is demonstrated by measurements of the spin noise spectra of bulk n:GaAs in the spectral range 835-918 nm. It is shown that the inevitable growth of the probe beam power with the sensitivity gain makes spin noise spectroscopy much more perturbative, but, at the same time, opens up fresh opportunities for studying nonlinear interactions of strong light fields with spin ensembles.Comment: 8 pages, 9 figure

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Section: Polarimetric Schemesmentioning

confidence: 99%

Resources of polarimetric sensitivity in spin noise spectroscopy

et al. 2013

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“…We finally turned to a stack of 4 or 6 silica plates at Brewster incidence. This arrangement yields the required magnification factor (∼ 2 or 3) and birefringence is acceptably small provided that interference between multiple reflections are suppressed by using wedged, tilted plates, so that no two surfaces are parallel [38].…”

Section: Realizationmentioning

confidence: 99%

Measurement of the parity violating6S−7Stransition amplitude in cesium achieved within2×10−13
Guéna
¹
,
Lintz
²
,
Bouchiat
³

2005
Phys. Rev. A
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87
3
66
0
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We exploit the process of asymmetry amplification by stimulated emission which provides an original method for parity violation (PV) measurements in a highly forbidden atomic transition. The method involves measurements of a chiral, transient, optical gain of a cesium vapor on the 7S − 6P 3/2 transition, probed after it is excited by an intense, linearly polarized, collinear laser, tuned to resonance for one hyperfine line of the forbidden 6S-7S transition in a longitudinal electric field. We report here a 3.5 fold increase, of the one-second-measurement sensitivity, and subsequent reduction by a factor of 3.5 of the statistical accuracy compared with our previous result [J. Guéna et al., Phys. Rev. Lett. 90, 143001 (2003)]. Decisive improvements to the set-up include an increased repetition rate, better extinction of the probe beam at the end of the probe pulse and, for the first time to our knowledge, the following: a polarization-tilt magnifier, quasi-suppression of beam reflections at the cell windows, and a Cs cell with electrically conductive windows. We also present real-time tests of systematic effects, consistency checks on the data, as well as a 1% accurate measurement of the electric field seen by the atoms, from atomic signals. PV measurements performed in seven different vapor cells agree within the statistical error. Our present result is compatible with the more precise Boulder result within our present relative statistical accuracy of 2.6%, corresponding to a 2 × 10 −13 atomic-unit uncertainty in E pv 1 . Theoretical motivations for further measurements are emphasized and we give a brief overview of a recent proposal that would allow the uncertainty to be reduced to the 0.1% level by creating conditions where asymmetry amplification is much greater.

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“…-a "polarisation magnifier" [25]. This device, made of 4 or 6 plates at Brewster incidence, enhances the angle of the polarisation tilt to be measured by the polarimeter.…”

Section: The Pv Results and Their Improvementmentioning

confidence: 99%

“…It also suppresses the interference between the beams reflected at the input and exit windows. -a "polarisation magnifier" [25]. This device, made of 4 or 6 plates at Brewster incidence, enhances the angle of the polarisation tilt to be measured by the polarimeter.…”

Section: Measurement Proceduresmentioning

confidence: 99%

Pump-probe measurement of atomic parity violation in cesium with a precision of 2.6%

2007

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We present the atomic parity violation measurements made in Cs vapour using a pump-probe scheme. After pulsed excitation of the 6S-7S forbidden transition in the presence of a longitudinal electric field, a laser beam resonant with one of the 7S-6P transitions stimulates the 7S atom emission for a duration of 20 ns. The polarisation of the amplified probe beam is analysed. A seven-fold signature allows discrimination of the parity violating linear dichroism, and real-time calibration by a similar, known, parity conserving linear dichroism. The zero-field linear dichroism signal due to the magnetic dipole transition moment is observed for the first time, and used for in-situ determination of the electric field. The result, ImE pv 1 = (−808 ± 21) × 10 −14 ea0, is in perfect agreement with the corresponding, more precise measurement obtained by the Boulder group. A transverse field configuration with large probe amplification could bring atomic parity violation measurements to the 0.1% accuracy level.

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Demonstration of an optical polarization magnifier with low birefringence

Cited by 8 publications

References 15 publications

Resources of polarimetric sensitivity in spin noise spectroscopy

Resources of polarimetric sensitivity in spin noise spectroscopy

Measurement of the parity violating6S−7Stransition amplitude in cesium achieved within2×10−13
Guéna
¹
,
Lintz
²
,
Bouchiat
³

2005
Phys. Rev. A
Self Cite
87
3
66
0
View full text Add to dashboard Cite

Pump-probe measurement of atomic parity violation in cesium with a precision of 2.6%

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Demonstration of an optical polarization magnifier with low birefringence

Cited by 8 publications

References 15 publications

Resources of polarimetric sensitivity in spin noise spectroscopy

Resources of polarimetric sensitivity in spin noise spectroscopy

Measurement of the parity violating6S−7Stransition amplitude in cesium achieved within2×10−13Guéna1, Lintz2, Bouchiat3 2005Phys. Rev. ASelf Cite873660View full textAdd to dashboardCite

Pump-probe measurement of atomic parity violation in cesium with a precision of 2.6%

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Resources

About

Measurement of the parity violating6S−7Stransition amplitude in cesium achieved within2×10−13
Guéna
¹
,
Lintz
²
,
Bouchiat
³

2005
Phys. Rev. A
Self Cite
87
3
66
0
View full text Add to dashboard Cite