Performance of Dye and Ti:sapphire laser systems for laser ionization and spectroscopy studies at S3

Raeder, S.; Ferrer, R.; Granados, C.; Huyse, M.; Kron, T.; Kudryavtsev, Yu.; Lecesne, N.; Piot, J.; Romans, Jekabs; Savajols, H.; Duppen, P. Van; Wendt, Κ.

doi:10.1016/j.nimb.2019.11.024

Cited by 9 publications

(9 citation statements)

References 99 publications

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“…In the future, a dye laser system is foreseen to be implemented to complement the Ti:sa wavelength coverage [24]. Recently, studies of a single-longitudinal-mode, pumped pulsed-dye amplifier have been carried out for high-resolution and high repetition rate spectroscopy applications, when using the dye laser system [25].…”

Section: The Gisele Laser Laboratorymentioning

confidence: 99%

First Offline Results from the S3 Low-Energy Branch

Romans

Ajayakumar

Authier

et al. 2022

Atoms

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We present the first results obtained from the S3 Low-Energy Branch , the gas cell setup at SPIRAL2-GANIL, which will be installed behind the S3 spectrometer for atomic and nuclear spectroscopy studies of exotic nuclei. The installation is currently being commissioned offline, with the aim to establish optimum conditions for the operation of the radio frequency quadrupole ion guides, mass separation and ion bunching, providing high-efficiency and low-energy spatial spread for the isotopes of interest. Transmission and mass-resolving power measurements are presented for the different components of the S3-LEB setup. In addition, a single-longitudinal-mode, injection-locked, pumped pulsed-titanium–sapphire laser system has been recently implemented and is used for the first proof-of-principle measurements in an offline laser laboratory. Laser spectroscopy measurements of erbium, which is the commissioning case of the S3 spectrometer, are presented using the 4f126s23H6→4f12(3H)6s6p optical transition.

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Section: The Gisele Laser Laboratorymentioning

confidence: 99%

First Offline Results from the S3 Low-Energy Branch

Romans

Ajayakumar

Authier

et al. 2022

Atoms

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“…This new technique enabled a detailed characterization of gas jets created by different nozzle geometries [175]. Dedicated apparatuses are developed to employ laser spectroscopy in a supersonic gas jet at the in-flight separator S 3 at GANIL [173,129], the Mass Analysing Recoil Apparatus (MARA) separator at Jyväskylä University [176,177] and in a modified version using ionguiding electric fields and neutralization on filaments at the Separator for Heavy-Ion reaction Products (SHIP) of the GSI [178].…”

Section: Laser Ionization In a Gas Jetmentioning

confidence: 99%

Recent progress in laser spectroscopy of the actinides

Block,

Laatiaoui,

Raeder

2020

Preprint

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The interest to perform laser spectroscopy in the heaviest elements arises from the strong impact of relativistic effects, electron correlations and quantum electrodynamics on their atomic structure. Once this atomic structure is well understood, laser spectroscopy also provides access to nuclear properties such as spins, mean square charge radii and electromagnetic moments in a nuclear-model independent way. This is of particular interest for the heaviest actinides around N = 152, a region of shell-stabilized deformed nuclei. The experimental progress of laser spectroscopy in this region benefitted from continuous methodological and technical developments such as the introduction of buffer-gas-stopping techniques that enabled the access to ever more exotic nuclei far-off stability. The key challenges faced in this endeavor are small yields, nuclides with rather short half-lives and the need to search for atomic transitions in a wide spectral range guided by theoretical predictions. This paper describes the basics of the most common experimental methods and discusses selected recent results on the atomic and nuclear properties of the actinides up to nobelium where pioneering experiments were performed at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany.

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“…Alongside the development of the more complex injection-locking technique with Ti:Sa cavities to produce these kind of laser pulses 1 , direct pulsed amplification of a continuous-wave (cw) narrowbandwidth laser source has been introduced [2][3][4][5][6][7][8][9][10] . A comprehensive overview of both laser types in light of the applications discussed here is given in 11 . The pulsed dye amplifier (PDA) systems consist of several components.…”

Section: Introductionmentioning

confidence: 99%

“…The rest of the cavity houses a 45 degree quarter wave plate and a Faraday isolator(5), to avoid spatial hole burning, a polarizer (6), an Electro Optical Modulator (EOM, 7), a 5 mm (8) and 1 mm (9) dual etalon setup and the output mirror(10). Next, The light of the seed laser is sent through an INNOSLAB amplifier(11), pumped by a diode stack (not shown here). After amplification, the fundamental laser beam of 1064 nm is guided through beam shaping optics(12) to obtain an optimal beam profile for frequency doubling in a nonlinear crystal(13).…”

mentioning

confidence: 99%

Single-longitudinal-mode pumped pulsed-dye amplifier for high-resolution laser spectroscopy

Verlinde

Ferrer

Claessens

et al. 2020

Review of Scientific Instruments

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The In-Gas-jet Laser Ionization and Spectroscopy (IGLIS) technique relies on narrow-bandwidth, high-peakpower, short-pulse-length (≈ 10 ns) and high-repetition-rate laser pulses to probe, precisely and efficiently, the hyperfine structure of medium-heavy and heavy isotopes, embedded in a supersonic jet. The power and repetition rate requirements of the laser system are met by combining ≈ 100 W, 8 ns pulse width, 10 kHz commercial Nd:YAG pump lasers with a single-mode continuous wave (cw) seeded Pulsed Dye Amplifier (PDA). The common multi-longitudinal-mode operation of these Nd:YAG pump lasers causes, however, undesirable frequency sidebands in the output spectrum of the PDA system, hindering the attainable spectral resolution, a correct interpretation and an accurate analysis of the hyperfine spectra. In this article, a new prototype Nd:YAG laser is presented, which combined with the PDA system, is capable of providing quasi transform-limited laser pulses at 10 kHz, with only limited losses in laser power. This system reduces any spectral sideband amplitude below a proven upper limit of 0.2% with one order of magnitude extra reduction expected based on simulations. A full characterization of both the Nd:YAG and PDA laser systems is done by studying the temporal and frequency behavior in detail. The study is finalized by a performance benchmark of this combined laser system in the hyperfine spectroscopy of copper isotopes, showcasing its applicability for future IGLIS studies.

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Performance of Dye and Ti:sapphire laser systems for laser ionization and spectroscopy studies at S3

Cited by 9 publications

References 99 publications

First Offline Results from the S3 Low-Energy Branch

First Offline Results from the S3 Low-Energy Branch

Recent progress in laser spectroscopy of the actinides

Single-longitudinal-mode pumped pulsed-dye amplifier for high-resolution laser spectroscopy

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