Faraday-rotation Bell–Bloom atomic magnetometer using an alternating pump–probe beam

AbstractOptical pump-probe measurements were performed on planar slab waveguides containing silicon nanocrystals in an attempt to measure optical gain from photo-excited silicon nanocrystals. Two experiments were performed, one with a continuous-wave probe beam and a pulsed pump beam, giving a time resolution of approximately 25 ns, and the other with a pulsed pump and probe beam, giving a time resolution of approximately 10 ps. In both cases the intensity of the probe beam was found to be attenuated by the pump beam, with the attenuation increasing monotonically with increasing pump power. Time-resolved measurements using the first experimental arrangement showed that the probe signal recovered its initial intensity on a time scale of 45-70 μs, a value comparable to the exciton lifetime in Si nanocrystals. These data are shown to be consistent with an induced absorption process such as confined carrier absorption. No evidence for optical gain was observed.

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Picosecond time-resolved near-IR spectra of C60 excited states by pump-probe measurements using a probe beam based on broad-band optical parametric generation

Chemical Communications ◽

10.1039/cc9960000117 ◽

1996 ◽

pp. 117 ◽

Cited By ~ 10

Author(s):

Akira Watanabe ◽

Osamu Ito ◽

Motoyuki Watanabe ◽

Haruhisa Saito ◽

Musubu Koishi

Keyword(s):

Excited States ◽

Probe Beam ◽

Broad Band ◽

Time Resolved ◽

Pump Probe ◽

Parametric Generation ◽

Near Ir ◽

Optical Parametric ◽

Optical Parametric Generation ◽

Probe Measurements

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Phase cycling schemes for two-dimensional optical spectroscopy with a pump–probe beam geometry

Chemical Physics ◽

10.1016/j.chemphys.2009.04.019 ◽

2009 ◽

Vol 360 (1-3) ◽

pp. 110-115 ◽

Cited By ~ 36

Author(s):

Suxia Yan ◽

Howe-Siang Tan

Keyword(s):

Optical Spectroscopy ◽

Probe Beam ◽

Two Dimensional ◽

Pump Probe ◽

Phase Cycling ◽

Beam Geometry

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QUANTUM BEATS IN SEMICONDUCTORS

International Journal of Modern Physics B ◽

10.1142/s0217979207043312 ◽

2007 ◽

Vol 21 (08n09) ◽

pp. 1621-1625

Author(s):

CHRISTIAN H. ZIENER ◽

THOMAS KAMPF ◽

WOLFGANG R. BAUER ◽

PETER M. JAKOB ◽

STEPHAN GLUTSCH ◽

...

Keyword(s):

Faraday Rotation ◽

Beat Frequency ◽

Magnetic Semiconductor ◽

Quantum Beat ◽

Quantum Beats ◽

Level System ◽

Pump Probe ◽

Light Pulses ◽

Band Parameter ◽

Band Dispersion

In this paper we present a new method to calculate the Faraday rotation using the Jones calculus applicable to light pulses. This result is used to calculate the quantum beats in a magnetic semiconductor generated by pump-probe experiments in Faraday geometry. Considering a six level system and neglecting band dispersion as well as Coulomb interaction we find the Luttinger parameter of the valence band to be the only band parameter contributing to the quantum beat frequency.

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