Cavity-enhanced optical anisotropy and all-optical spin noise spectrometer

Zapasskiĭ, V. S.; Przhibel’skiĭ, S. G.

doi:10.1134/s0030400x11690038

Cited by 9 publications

(9 citation statements)

References 8 publications

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“…As was already mentioned, the FR-based SNS exploits the paramagnetic part of the FR to monitor magnetization of the spin system. It seems evident that, to make conversion of spin-system magnetization to FR most efficient, one has to select the wavelength of the probe light in the region of the greatest paramagnetic FR (greatest FR cross section [79]), and, vice versa, the FR noise cannot be detected at wavelengths where the FR proper turns into zero. It was shown, however, that this is not the case.…”

Section: Optical Spectroscopy Of Spin Noisementioning

confidence: 99%

“…It is well known that FR can be strongly enhanced with the aid of a Fabry-Perot cavity [73][74][75][76][77][78][79], due to multiple passes of the light through the magneto-optical medium. Such an approach is especially popular now for studying the dynamics of spin states of low-dimensional semiconductor structures in high-finesse microcavities, where the observed FR can be increased by a few orders of magnitude.…”

Section: Cavity-enhanced Spin-noise Spectroscopymentioning

confidence: 99%

“…In [74], it was shown that polarization of a monochromatic light resonant to a longitudinal mode of a Fabry-Perot cavity, may be highly sensitive to modulation of the intracavity anisotropy at frequencies multiple of spacing between its longitudinal modes. This effect can be qualitatively understood in terms of the light traveling over the cavity back and forth and has much in common with the known effect of mode-locking in lasers [75].…”

Section: Cavity-enhanced Spin Noise Spectroscopymentioning

confidence: 99%

See 2 more Smart Citations

Spin-noise spectroscopy: from proof of principle to applications

Zapasskiĭ¹

2013

Adv. Opt. Photon.

142

130

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More than 30 years ago, the feasibility of detecting magnetic resonance in the Faraday-rotation noise spectrum of transmitted light was demonstrated experimentally. However, practical applications of this experimental approach have emerged only recently thanks, in particular, to a number of crucial technical advancements. This method has now become a popular and efficient tool for studying magnetic resonance and spin dynamics in atomic and solid-state paramagnets. In this paper, we present a review of research in the field of spin-noise spectroscopy, including its physical basis, its evolution since its first experimental demonstration, and its recent experimental advances. Main attention is paid to the specific capabilities of this technique that render it unique compared to other methods of magnetic and optical spectroscopy. The paper is primarily intended for experimentalists who may wish to use this novel optical technique.

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Section: Optical Spectroscopy Of Spin Noisementioning

confidence: 99%

Section: Cavity-enhanced Spin-noise Spectroscopymentioning

confidence: 99%

Section: Cavity-enhanced Spin Noise Spectroscopymentioning

confidence: 99%

See 1 more Smart Citation

Spin-noise spectroscopy: from proof of principle to applications

Zapasskiĭ¹

2013

Adv. Opt. Photon.

142

130

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“…A breakthrough in this field was achieved when the sweeping spectrum analyzer was replaced by a data acquisition card with a real-time fast Fourier transform (FFT) processing system 3 , 13 , which enabled a much higher signal-noise ratio, leading to spin detection in quantum dot ensembles 13 – 16 . The spin noise spectrum could further be enhanced by a Fabry-Perot cavity allowing multiple passes of the light through the magneto-optical medium 17 – 19 .…”

Section: Introductionmentioning

confidence: 99%

Optical spin noise spectra of Rb atomic gas with homogeneous and inhomogeneous broadening

Shi

Qian

et al. 2017

Sci Rep

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We study the optical spin noise spectra of Rb atomic gas with different broadening mechanisms. The first is homogeneous broadening using 250 Torr nitrogen buffer gas, while the other mechanism is inhomogeneous broadening via the Doppler effect without buffer gas. Spin noise signals are measured by the typical spin noise spectroscopy geometry (single-pass geometry) and the saturated absorption spectroscopy geometry (double-pass geometry). In the homogeneously broadened system, the line shape of the optical spin noise spectra shows a pronounced dip that vanishes at the center of the band in both geometries. In the inhomogeneously broadened system, however, a peak in the single-pass geometry and a dip in the double-pass geometry at the band center are observed. The difference between the optical spin noise spectra from these two systems arises from their different level-broadening mechanisms.

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“…In general, the angle of Faraday rotation is proportional to the optical path length, which can be increased by placing the active medium into a cavity, either a macroscopic one [16] or a microcavity [17][18][19]. Another method to increase the spectroscopic sensitivity is to increase the probe intensity sent through the sample while keeping the photon flux incident on the photodetector at a low level by diminishing the light intensity using a high polarization extinction (HPE) geometry [20].…”

Section: Introductionmentioning

confidence: 99%

Increased sensitivity of spin noise spectroscopy using homodyne detection in n -doped GaAs

et al. 2018

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We implement the homodyne detection scheme for an increase of the polarimetric sensitivity in spin noise spectroscopy. Controlling the laser intensity of the local oscillator, which is guided around the sample and does not perturb the measured spin system, we are able to improve the signal-to-noise ratio. The opportunity of additional amplification of the measured signal strength allows us to reduce the probe laser intensity incident onto the sample and therefore to approach the non-perturbative regime. The efficiency of this scheme with signal enhancement by more than a factor of 3 at low probe powers is demonstrated on bulk -doped GaAs where the reduced electron-spin relaxation rate is shown experimentally. Additionally, the control of the optical phase provides us with the possibility to switch between the measurement of Faraday rotation and ellipticity without changes in the optical setup.

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Cavity-enhanced optical anisotropy and all-optical spin noise spectrometer

Cited by 9 publications

References 8 publications

Spin-noise spectroscopy: from proof of principle to applications

Spin-noise spectroscopy: from proof of principle to applications

Optical spin noise spectra of Rb atomic gas with homogeneous and inhomogeneous broadening

Increased sensitivity of spin noise spectroscopy using homodyne detection in n -doped GaAs

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