High precision description of the rovibronic structure of the I $\mathsf{_2}$ B-X spectrum

Knöckel, H.; Bodermann, Bernd; Tiemann, E.

doi:10.1140/epjd/e2003-00313-4

Cited by 77 publications

(42 citation statements)

References 34 publications

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“…The iodine B state is spectroscopically well known, and for ñ È 14 we find the values of T cl È 0.3 ps and T rev È 37 ps (28). Here T rev d T cl , which results from the weak anharmonicity in the excitation region.…”

mentioning

confidence: 62%

Visualizing Picometric Quantum Ripples of Ultrafast Wave-Packet Interference

Katsuki

Chiba

Girard

et al. 2006

Science

120

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Interference fringes in vibrating molecules are a signature of quantum mechanics, but are often so short-lived and closely spaced that they elude visualization. We have experimentally visualized dynamical quantum interferences, which appear and disappear in less than 100 femtoseconds in the iodine molecule synchronously with the periodic crossing of two counterpropagating nuclear wave packets. The obtained images have picometer and femtosecond spatiotemporal resolution, representing a detailed picture of the quantum interference.

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mentioning

confidence: 62%

Visualizing Picometric Quantum Ripples of Ultrafast Wave-Packet Interference

Katsuki

Chiba

Girard

et al. 2006

Science

120

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“…Our original photon energy calibration was performed utilizing absorption lines energies of iodine from the atlas of Gerstenkorn and Luc [10]. Since our earlier work, re-examination of the iodine spectrum [6][7][8] has shown that a weakly energy-dependent systematic correction factor (≈−0.006 cm −1 at the probe laser frequencies in our spectral region) must be applied to the energies of Gerstenkorn and Luc. We derived additional corrections to the assumed energies of the observed iodine lines used for our calibration by convolving our experimental probe laser bandwidth with these improved values of the iodine lines to take account of blended lines and hyperfine structure.…”

Section: Limitations Of the Accuracy Of Our Previous Results For The Imentioning

confidence: 99%

“…Preferably, the series used should be free of perturbations, eliminating the need for a multichannel quantum defect theory treatment of the data. The evolution of laser spectroscopic techniques, along with improved values of atlases of calibration lines [6][7][8] (in this case the absorption lines of molecular iodine) has made new measurements possible, and also enabled the re-evaluation of older data to a higher degree of precision.…”

Section: Introductionmentioning

confidence: 99%

Revision of the ionization energy of neutral carbon

2018

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This publication describes a re-analysis of previously published data on neutral carbon (C I). We used critically examined and improved values for the line energies of the absorption spectrum of molecular iodine to calibrate the transition energies of C I absorption lines originating from the 1s P°2 level and for the fine-structure interval of the ionic ground state together with modern fitting techniques lead to a new value of the ionization energy of neutral carbon with 9 times the precision of previous work, 90 820.348(9) cm −1 (equivalent to 11.260 2880(11) eV), as well as a table of predicted values for the energies of unobserved states in the series.

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“…To this end, the dye laser output is directed to an existing setup for saturated absorption spectroscopy in an I 2 vapor cell [10]. As the I 2 spectrum has been well calibrated [11,12], it can also serve to independently determine the FSR of the FPI, and to assess the overall performance of our method.…”

Section: Frequency Calibrationmentioning

confidence: 99%

Widely tunable laser frequency offset lock with 30 GHz range and 5 THz offset

Biesheuvel¹,

Noom²,

Salumbides³

et al. 2013

Opt. Express

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Abstract:We demonstrate a simple and versatile method to greatly extend the tuning range of optical frequency shifting devices, such as acousto-optic modulators (AOMs). We use this method to stabilize the frequency of a tunable narrow-band continuous-wave (CW) laser to a transmission maximum of an external Fabry-Perot interferometer (FPI) with a tunable frequency offset. This is achieved through a servo loop which contains an in-loop AOM for simple radiofrequency (RF) tuning of the optical frequency over the full 30 GHz mode-hop-free tuning range of the CW laser. By stabilizing the length of the FPI to a stabilized helium-neon (HeNe) laser (at 5 THz offset from the tunable laser) we simultaneously transfer the ∼ 1 MHz absolute frequency stability of the HeNe laser to the entire 30 GHz range of the tunable laser. Thus, our method allows simple, wide-range, fast and reproducible optical frequency tuning and absolute optical frequency measurements through RF electronics, which is here demonstrated by repeatedly recording a 27-GHz-wide molecular iodine spectrum at scan rates up to 500 MHz/s. General technical aspects that determine the performance of the method are discussed in detail. 19235-19240 (2009). 3. S. Hisatake, T. Konishi, and T. Nagatsuma, "Multiplication of optical frequency shift by cascaded electro-optic traveling phase gratings operating above 10 GHz," Opt. Lett. 36, 1350Lett. 36, -1352Lett. 36, (2011. 4. D. Haubrich and R. Wynands, "A modified commercial Ti:sapphire laser with 4 kHz rms linewidth," Opt. Comm. 123, 558-562 (1996). 5. U. Schünemann, H. Engler, R. Grimm, M. Weidemüller, and M. Zielonkowski, "Simple scheme for tunable frequency offset locking of two lasers," Rev. Sci. Instrum. 70, 242-243, (1999

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High precision description of the rovibronic structure of the I $\mathsf{_2}$ B-X spectrum

Cited by 77 publications

References 34 publications

Visualizing Picometric Quantum Ripples of Ultrafast Wave-Packet Interference

Visualizing Picometric Quantum Ripples of Ultrafast Wave-Packet Interference

Revision of the ionization energy of neutral carbon

Widely tunable laser frequency offset lock with 30 GHz range and 5 THz offset

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