Two-photon spectroscopy of rubidium using a grating-feedback diode laser

Olson, Abraham; Carlson, Evan J.; Mayer, Shannon K.

doi:10.1119/1.2173278

Cited by 43 publications

(28 citation statements)

References 22 publications

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“…The accessibility of electronic transitions in rubidium to resonant light from inexpensive diode laser systems has made rubidium a popular choice for laser-based atomic physics experiments in the undergraduate laboratory. Recent undergraduate-level experiments in rubidium include laser spectroscopy, 16 the temperature dependence of Doppler-broadening, 17 Faraday rotation, 18 demonstration of the Kramers-Kronig relation, 19 two-photon spectroscopy, 20 coherent population trapping, 21 and EIT. 22 Nonlinear optics is an intriguing and important topic in modern optics.…”

Section: Introductionmentioning

confidence: 99%

“…We report on the results of experiments carried out in two different laboratories with different equipment thereby addressing a wide range of possible experimental conditions. The CBL experiment presented here uses the same equipment as saturated absorption spectroscopy 16 and two-photon spectroscopy 20 in rubidium and can therefore be easily performed in laboratories with apparatus for these experiments.…”

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confidence: 99%

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Collimated blue light generation in rubidium vapor

Kienlen

Holte

Dassonville

et al. 2013

American Journal of Physics

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We describe an experiment for generating and characterizing a beam of collimated blue light (CBL) in a rubidium vapor. Two low-power, grating-feedback diode lasers, operating at 780.2 nm (5S1/2→5P3/2) and 776.0 nm (5P3/2→5D5/2), respectively, provide step-wise excitation to the 5D excited state in rubidium. Under the right experimental conditions, cascade decay through the 6P excited state will yield a collimated blue (420-nm) beam of light with high temporal and spatial coherence. We investigate the production of a blue beam under a variety of experimental conditions and characterize the spatial coherence and spectral characteristics. This experiment provides advanced undergraduate students with a unique opportunity to investigate nonlinear optical phenomena in the laboratory and uses equipment that is commonly available in laboratories equipped to investigate diode-laser-based absorption spectroscopy in rubidium.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Collimated blue light generation in rubidium vapor

Kienlen

Holte

Dassonville

et al. 2013

American Journal of Physics

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“…The fluorescence from the Rb cell at 420 nm is filtered and focused by another lens to a photomultiplier tube (Thorlabs, PMM01). The Rb cell is kept at 190 o C temperature to enhance the two-photon transition [1]. The spectrum in figure 13 shows the fluorescence emission generated from the two-photon transition in Rubidium.…”

Section: Interrogation Of a Two-photon Transitionmentioning

confidence: 99%

“…Among these candidates is a two-photon transition of Rubidium at 778 nm [1], where one can phase-lock the second harmonic of the 1556 nm laser to the 85 Rb transition 5S 1/2 ( F = 3) -5D 5/2 ( F = 5). The main advantage of this approach is that it provides us with two highly stable wavelengths; the one lying in the edge of the visible spectrum is serviceable in length metrology applications while the fundamental wavelength offers an ideal reference for optical telecommunication industry or other fibre-related measurement / metrology.…”

Section: Introductionmentioning

confidence: 99%

Investigation of bulk and waveguide frequency doubling crystals for interrogation of a two-photon transition in rubidium

Terra

Hussein

Burger

2015

Optik - International Journal for Light and Electron Optics

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“…In schemes such as the one demonstrated here, where the energies of the two atomic transitions are different, Doppler-free schemes are not effective and Doppler broadening dominates. A Doppler-free scheme could be performed using the 5S 1/2 → 5P 3/2 → 5D 5/2 transition in Rb, for example [5,23,24]. The atomic build-up on the surface of the device has been used as a tool in this experiment but it also results in slight degradations in the Q that may become more important with lower-loss resonators.…”

Section: −2mentioning

confidence: 99%

All-optical-switching demonstration using two-photon absorption and the Zeno effect

et al. 2013

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Low-contrast all-optical Zeno switching has been demonstrated in a Si3N4 microdisk resonator coupled to a hot atomic vapor. The device is based on the suppression of the field build-up within a microcavity due to non-degenerate two-photon absorption. This experiment used one beam in a resonator and one in free-space due to limitations related to device physics. These results suggest that a similar scheme with both beams resonant in the cavity would correspond to input power levels near 20 nW.PACS numbers: 42.65. Pc, 42.82.Et The quantum Zeno effect (QZE) can prevent a randomly occurring process by frequent measurement [1]. It has previously been shown [2][3][4] that this effect could be used to suppress errors in quantum logic gates using strong two-photon absorption (TPA). Recently, this work was extended to show that the QZE has a classical analog that could be used to create a low-loss all-optical switch [5] capable of operating at low powers.Whereas the QZE prevents the buildup of a probability amplitude, the classical Zeno effect suppresses the coherent buildup of the electromagnetic field amplitude within a microresonator. To see how this can be used to create a switch, consider a system in which the resonator is strongly coupled to a two-photon absorbing medium such that two distinct frequencies are required for absorption to take place. With the resonator critically coupled to two waveguides, the presence of a resonant input at either of the two frequencies will result in the light coupling into the resonator and leaving the opposite waveguide. This is due to the destructive interference between the light remaining in the waveguide and the built-up field amplitude in the cavity that couples back to the waveguide. When both frequencies are present in the cavity the TPA prevents the coherent intra-cavity field buildup and the input beams pass by the resonator because there is now insufficient amplitude in the cavity to result in interference.Based on these principles, groups have proposed alloptical Zeno switches employing other dissipative mechanisms, such as saturated absorption in a quantum dot coupled to a photonic crystal cavity [6], inverse Raman scattering (IRS) in a Silicon microdisk [7], IRS in an optical fiber [8] and sum and difference frequency generation in a χ (2) microdisk [9]. More generally, other techniques have recently been investigated to demonstrate all-optical switching with the intent of reducing operating power levels [10][11][12][13][14][15].Here we present experimental progress towards a clas- sical Zeno switch consisting of a Si 3 N 4 microdisk embedded in hot Rubidium (Rb) vapor. A key aspect of this work is the enhanced rate of TPA that can be achieved at low power levels by confining fields to a arXiv:1206.0930v1 [quant-ph]

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Two-photon spectroscopy of rubidium using a grating-feedback diode laser

Cited by 43 publications

References 22 publications

Collimated blue light generation in rubidium vapor

Collimated blue light generation in rubidium vapor

Investigation of bulk and waveguide frequency doubling crystals for interrogation of a two-photon transition in rubidium

All-optical-switching demonstration using two-photon absorption and the Zeno effect

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