scholarly journals Measurement of molecular absorption spectrum with a laser locked on a high-finesse cavity

2018 ◽  
Vol 67 (10) ◽  
pp. 104206
Author(s):  
Kang Peng ◽  
Sun Yu ◽  
Wang Jin ◽  
Liu An-Wen ◽  
Hu Shui-Ming
Keyword(s):  
Absorption Spectrum ◽  
Molecular Absorption ◽  
High Finesse ◽  
High Finesse Cavity

Theory of a far-off resonance mode-locked Raman laser in H_2 with high finesse cavity enhancement

2007 ◽  
Vol 24 (9) ◽  
pp. 2055 ◽  
Author(s):  
Yihan Xiong ◽  
Sytil Murphy ◽  
J. L. Carlsten ◽  
Kevin Repasky
Keyword(s):  
Raman Laser ◽  
Resonance Mode ◽  
High Finesse ◽  
High Finesse Cavity

Frequency Stability Based on Molecular Absorption Spectrum of Single-Frequency Pulse Laser

2014 ◽  
Vol 41 (9) ◽  
pp. 0902010
Author(s):  
沈红超 Shen Hongchao ◽  
吴松华 Wu Songhua ◽  
秦胜光 Qin Shengguang ◽  
刘金涛 Liu Jintao ◽  
张凯临 Zhang Kailin ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Pulse Laser ◽  
Frequency Stability ◽  
Single Frequency ◽  
Molecular Absorption ◽  
Frequency Pulse

scholarly journals Diffuse Interstellar Bands – The Unidentified Part of the Interstellar Absorption Spectrum

1989 ◽  
Vol 135 ◽  
pp. 67-86 ◽  
Author(s):  
Jacek Krełowski
Keyword(s):  
Absorption Spectrum ◽  
Line Of Sight ◽  
Optical Parameters ◽  
Interstellar Matter ◽  
Molecular Absorption ◽  
Interstellar Clouds ◽  
Diffuse Interstellar Bands ◽  
Intensity Ratios ◽  
Molecular Abundances

The unidentified (since 1921) diffuse interstellar bands (DIBs) are discussed together with their relations to other interstellar absorptions sucn as: continuous extinction, polarization and atomic or molecular absorption lines. It is shown that DIBs do not form the absorption spectrum of one agent, but probably of several (3 or more). DIBs as well as other interstellar absorptions are usually formed in several clouds along a line-of-sight. Thus, they suffer Doppler splitting; the first high resolution profiles free of the latter effect are described. Since single interstellar clouds may differ not only in radial velocities but also in many physical (optical) parameters, the observed interstellar absorptions are ill-defined averages over all clouds situated along any line-of-sight. It is of basic importance to determine not only the single cloud profiles of diffuse bands, but also their relations to other interstellar absorptions in the same clouds. Intensity ratios of DIBs are shown to be sensitive to the shapes of extinction curves, depletion patterns of elements and molecular abundances in the considered clouds. The sensitivity of the DIBs to the variation in polarization is less documented but probably also present. Thus the diffuse lines are presented as the unidentified part of the absorption spectrum of interstellar matter. Their identification depends on the determination of their relations to other interstellar absorptions which must be determined precisely.

Extending high-finesse cavity techniques to the far-infrared

2013 ◽  
Vol 84 (7) ◽  
pp. 075107 ◽  
Author(s):  
Bridget Alligood DePrince ◽  
Blithe E. Rocher ◽  
Anne M. Carroll ◽  
Susanna L. Widicus Weaver
Keyword(s):  
Far Infrared ◽  
High Finesse ◽  
High Finesse Cavity

Highly sensitive detection of molecular absorption using a high finesse optical cavity

1994 ◽  
Vol 107 (5-6) ◽  
pp. 369-372 ◽  
Author(s):  
K. Nakagawa ◽  
T. Katsuda ◽  
A.S. Shelkovnikov ◽  
M. de Labachelerie ◽  
M. Ohtsu
Keyword(s):  
Optical Cavity ◽  
Sensitive Detection ◽  
Molecular Absorption ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
High Finesse

scholarly journals Absorption spectroscopy of trapped rubidium atoms

2004 ◽  
Vol 82 (11) ◽  
pp. 905-916 ◽  
Author(s):  
S Cauchi ◽  
A Vorozcovs ◽  
M Weel ◽  
S Beattie ◽  
O Gagnon ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Line Width ◽  
Optical Pumping ◽  
Laser Line ◽  
Trapped Atoms ◽  
Rubidium Atoms ◽  
Fabry Perot ◽  
Measured Absorption ◽  
High Finesse ◽  
Laser Line Width

We determine the absolute density of a sample of laser-cooled atoms in a two-level system by recording the absorption spectrum of the 85Rb 5S1/2 (F = 3, mf = 3) → 5P3/2 (F′ = 4, m′f = 4) transition. Trapped atoms were prepared in the (F = 3, mf = 3) ground state through optical-pumping techniques. We compare our results with an independent measure of the density that relies on a direct measurement of the number of atoms and size of the atomic sample. We also study the contributions of power broadening, laser line width, and Doppler broadening to the measured absorption spectrum. Our studies suggest that the natural line width (~6 MHz) can be measured to a precision of less than ~50 kHz if the laser line width is measured in real-time with a high-finesse Fabry–Perot cavity. PACS Nos.: 32.70.Cs, 32.70.Jz, 32.80.Pj, 42.62.Fi, 32.70.–n, 32.30.–r

Spontaneous Emission Lifetime of a Single TrappedCa+Ion in a High Finesse Cavity

2004 ◽  
Vol 92 (20) ◽  
Author(s):  
A. Kreuter ◽  
C. Becher ◽  
G. P. T. Lancaster ◽  
A. B. Mundt ◽  
C. Russo ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Emission Lifetime ◽  
High Finesse ◽  
High Finesse Cavity
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