Pressure Shift and Broadening of Methane Line at 3.39<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>μ</mml:mi></mml:math>Studied by Laser-Saturated Molecular Absorption

Barger, R. L.; Hall, John L.

doi:10.1103/physrevlett.22.4

Cited by 343 publications

(56 citation statements)

References 4 publications

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“…If the frequency of the reference laser is sufficiently close to the frequency of the target laser, the two lasers may be heterodyned on a photodetector and the resulting beat note can be used to stabilize the target laser. 1 However, this is only practical up to a certain frequency difference due to the bandwidth of the photodetector.…”

Section: Introductionmentioning

confidence: 99%

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Bohlouli-Zanjani

Afrousheh

Martin

2006

Review of Scientific Instruments

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It is demonstrated that RF current modulation of a frequency stabilized injection-locked diode laser allows the stabilization of an optical cavity to adjustable lengths, by variation of the RF frequency. This transfer cavity may be used to stabilize another laser at an arbitrary wavelength, in the absence of atomic or molecular transitions suitable for stabilization. Implementation involves equipment and techniques commonly used in laser cooling and trapping laboratories, and does not require electro-or acousto-optic modulators. With this technique we stabilize a transfer cavity using a RF current-modulated diode laser which is injection locked to a 780 nm reference diode laser. The reference laser is stabilized using polarization spectroscopy in a Rb cell. A Ti:sapphire ring laser at 960 nm is locked to this transfer cavity and may be precisely scanned by varying the RF modulation frequency. We demonstrate the suitability of this system for the excitation of laser cooled Rb atoms to Rydberg states.

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Section: Introductionmentioning

confidence: 99%

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Bohlouli-Zanjani

Afrousheh

Martin

2006

Review of Scientific Instruments

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“…From here A mn ≃ 4 Hza and it is only small part of all spontaneous relaxation of m-term (without collisions) as the last is ν m | P =0 ≃ 100 Hza [37].…”

Section: Radiationmentioning

confidence: 99%

Sub-collision hyperfine structure of nonlinear-optical resonance with field scanning

Gus'kov¹,

Kovalevsky²,

Rudavets³

et al. 2004

Journal of Molecular Spectroscopy

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Some experimental evidences for methane are produced that the simple transition from frequency scanning of nonlinear-optical resonances to magnetic one may be accompanied with transition from sub-Doppler collisionally broadened structure to sub-collision hyperfine one. It is conditioned by nonlinearity of splitting of hyperfine sublevel for molecules in the adiabatically varied magnetic field and respectively breaking the analogy of magnetic and frequency scannings. The exact calculation of the resonance structure is considered for molecules with only one spin subsystem. The approximately spin-additive calculation of the structure is given for sufficiently fast rotating molecules with greater number of spin subsystems. Within the same approximation an example of hyperfine doubling in the magnetic and electric spectra of nonlinear-optical resonance is considered for fluoromethane.

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“…One method that has been particularly effective is laser-saturated absorption spectroscopy developed by J. L. Hall [76,77], Schawlow [78], Hansch [78], and others [79,80,[81][82][83][84]. In such a device, laser light is passed in opposite directions through, say, a CH 4 or 12 absorption cell.…”

Section: Lasersmentioning

confidence: 99%

History of Atomic Clocks

Ramsey¹

1983

J. RES. NATL. BUR. STAN.

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The history of atomic and molecular standards of time and frequency is traced from the earliest work on molecular and atomic beam resonance techniques to more recent developments that promise improved standards in the future. The various devices currently used as standards are discussed in detail from an historical prospective. The latter part of the article is devoted to a discussion of prospective developments which hold promise for major improvements in accuracy, stability and reproducibility.

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Pressure Shift and Broadening of Methane Line at 3.39μStudied by Laser-Saturated Molecular Absorption

Cited by 343 publications

References 4 publications

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Sub-collision hyperfine structure of nonlinear-optical resonance with field scanning

History of Atomic Clocks

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