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Crystals
Special Issues
Crystalline Raman Lasers
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Crystalline Raman Lasers

A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (20 February 2019) | Viewed by 14029

Special Issue Editor

Prof. Petr G. Zverev

E-Mail Website
Guest Editor
Prokhorov General Physics Institute of the Russian Academy of Sciences
Interests: solid state lasers; spectroscopy of solids; stimulated Raman scattering; Raman crystals; Raman lasers; tunable color center lasers

Special Issue Information

Dear Colleagues,

The first observation of the stimulated Raman scattering in 1962 followed by the discovery of efficient Raman crystals opened a new direction of the development of solid state Raman lasers which operated at the wavelengths not available by the standard lasers. Solid state Raman crystals possess high concentration of the scattering centers resulting in their high Raman gain, compactness and usability of the Raman shifters. They can operate in various temporal conditions in steady-state and transient regimes with continuous-wave and ultrashort pulse pumping. Their operation spectral range is limited only by the transparency region of the material. It was found that the number of nonlinear crystals can be activated with laser active ions to combine laser and Raman properties and develop self-Raman lasers.

The Special Issue on “Crystalline Raman Lasers” is intended to provide a unique international forum aimed at covering a broad description of lasers utilizing Raman crystals with various temporal, spectral and energy properties, as well as Raman crystal characterizations. Scientists and engineers working with Raman crystals and lasers are invited to contribute to this issue.

Prof. Petr G. Zverev
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Stimulated Raman Scattering
  • Light Frequency Conversion
  • Raman Effect
  • Spontaneous Raman Spectroscopy
  • Raman Lasers

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Published Papers (4 papers)

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Research

7 pages, 1489 KiB  
Article
Temperature Dependence of Raman Frequency Shift in SrWO4 Crystal Studied by Lattice Dynamical Calculations
by Jun Suda and Petr G. Zverev
Crystals 2019, 9(4), 197; https://doi.org/10.3390/cryst9040197 - 7 Apr 2019
Cited by 7 | Viewed by 3593
Abstract
The frequency shift of the Raman modes in strontium tungstate (SrWO4) was investigated in the temperature range from 15 to 295 K. The experimental temperature dependence of the shift was analyzed using both the lattice dynamical calculations and the lattice perturbative [...] Read more.
The frequency shift of the Raman modes in strontium tungstate (SrWO4) was investigated in the temperature range from 15 to 295 K. The experimental temperature dependence of the shift was analyzed using both the lattice dynamical calculations and the lattice perturbative approach. We found that the quartic anharmonic term of the first-order perturbation and the cubic term of the second-order perturbation, as well as the thermal expansion, contribute to the temperature shift of the highest-frequency Ag(ν1) mode. The values of the temperature sensitivity of the frequency shift of the Raman modes at room temperature were measured, which is important for developing high-power crystalline Raman lasers and frequency shifters. Full article
(This article belongs to the Special Issue Crystalline Raman Lasers)
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7 pages, 2126 KiB  
Article
Single-Frequency BaWO4 Raman MOPA at 1178 nm with 100-ns Pulse Pump
by Zhaojun Liu, Han Rao, Zhenhua Cong, Feng Xue, Xibao Gao, Shang Wang, Wei Tan, Chen Guan and Xingyu Zhang
Crystals 2019, 9(4), 185; https://doi.org/10.3390/cryst9040185 - 1 Apr 2019
Cited by 5 | Viewed by 3037
Abstract
A single-frequency crystalline Raman master oscillator power amplifier (MOPA) at 1178 nm was demonstrated. The pump source was a homemade single-frequency 1062 nm Nd:GGG MOPA system with a pulse width of 104 ns. The BaWO4 Raman oscillator generated seed radiation at 1178 [...] Read more.
A single-frequency crystalline Raman master oscillator power amplifier (MOPA) at 1178 nm was demonstrated. The pump source was a homemade single-frequency 1062 nm Nd:GGG MOPA system with a pulse width of 104 ns. The BaWO4 Raman oscillator generated seed radiation at 1178 nm with a pulse energy of 7.7 mJ. The highest amplified Raman pulse energy of 41.0 mJ was obtained with a pulse width of 44.1 ns. The linewidth was less than 500 MHz. Full article
(This article belongs to the Special Issue Crystalline Raman Lasers)
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6 pages, 2252 KiB  
Article
Diode-Pumped Actively Q-Switched Nd:YVO4/RTP Intracavity Raman Laser at 1.49 µm
by Yue Jiao, Zhaojun Liu, Xingyu Zhang, Feilong Gao, Chenyang Jia, Xiaohan Chen and Zhenhua Cong
Crystals 2019, 9(3), 168; https://doi.org/10.3390/cryst9030168 - 22 Mar 2019
Cited by 2 | Viewed by 3641
Abstract
For the first time, a diode-pumped actively Q-switched Nd:YVO4/RbTiOPO4 (RTP) intracavity Raman laser at 1.49 µm was demonstrated to the best of our knowledge. Experimentally, a dual-end diffusion-bonded YVO4–Nd:YVO4–YVO4 crystal was employed as the laser [...] Read more.
For the first time, a diode-pumped actively Q-switched Nd:YVO4/RbTiOPO4 (RTP) intracavity Raman laser at 1.49 µm was demonstrated to the best of our knowledge. Experimentally, a dual-end diffusion-bonded YVO4–Nd:YVO4–YVO4 crystal was employed as the laser medium to generate 1.34 µm laser radiation, and an RTP crystal as the Raman medium to enable the frequency conversion, by which radiation at 1.49 µm was achieved successfully. With an incident pump power of 10.4 W, an average output power of 502 mW was obtained at a pulse repetition rate of 15 kHz, corresponding to a conversion efficiency of 4.8%. Full article
(This article belongs to the Special Issue Crystalline Raman Lasers)
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20 pages, 3261 KiB  
Article
Stimulated Raman Scattering in Alkali-Earth Tungstate and Molybdate Crystals at Both Stretching and Bending Raman Modes under Synchronous Picosecond Pumping with Multiple Pulse Shortening Down to 1 ps
by Milan Frank, Sergei N. Smetanin, Michal Jelínek, David Vyhlídal, Vladislav E. Shukshin, Lyudmila I. Ivleva, Elizaveta E. Dunaeva, Irina S. Voronina, Petr G. Zverev and Václav Kubeček
Crystals 2019, 9(3), 167; https://doi.org/10.3390/cryst9030167 - 21 Mar 2019
Cited by 22 | Viewed by 3226
Abstract
Comparative investigation of characteristics of spontaneous and stimulated Raman scattering (SRS) in different alkali-earth tungstate and molybdate crystals at both high and low frequency anionic group vibrations is presented. It has been found that, among these crystals, the SrMoO4 and SrWO4 [...] Read more.
Comparative investigation of characteristics of spontaneous and stimulated Raman scattering (SRS) in different alkali-earth tungstate and molybdate crystals at both high and low frequency anionic group vibrations is presented. It has been found that, among these crystals, the SrMoO4 and SrWO4 crystals are the most perspective for SRS generation on both stretching and bending modes of internal anionic group vibrations with the strongest SRS pulse shortening under synchronous laser pumping because of not only highly intense stretching mode Raman line for efficient primary extra cavity long-shifted SRS conversion but also the widest bending mode Raman line for the strongest SRS pulse shortening down to the inverse width of the widest Raman line (~1 ps) at secondary intracavity short-shifted SRS conversion. The strongest 26-fold pump pulse shortening down to 1.4 ps at the Stokes component with the combined Raman shift in the synchronously pumped extra cavity SrMoO4 and SrWO4 Raman lasers has been demonstrated. It was found that synchronously pumped cascade SRS with combined Raman shift is more efficient in the SrWO4 crystal because the bending mode Raman line is more intense relative to the stretching mode Raman line than that in SrMoO4. Full article
(This article belongs to the Special Issue Crystalline Raman Lasers)
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