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Special Issue "Advances in Middle Infrared Laser Crystals and Its Applications (Volume II)"

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National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150006, China
Interests: middle infrared optical materials; nonlinear optical frequency conversion; solid-state laser technology
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Dr. Yu Ding

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Science and Technology on Electro-Optical Information Security Control Laboratory，Tianjin 300308, China
Interests: middle infrared optical materials; high power Q-switched laser technology; solid-state laser technology

Special Issue Information

Dear Colleagues,

In the past twenty years, there has been a growing interest in middle infrared (mid-IR) laser crystals and their application to achieve mid-IR laser radiation, which has benefited from the development of novel mid-infrared crystals and the improving quality of traditional mid-IR crystals. Moreover, these works have promoted the development of related technical applications.

This Special Issue of Crystals will focus on the most recent advances in mid-IR laser crystals, from materials to laser sources and applications. It will bring together the latest developments in novel mid-IR crystals, the improvement of the quality of mid-IR crystals, mid-IR nonlinear crystals, mid-IR lasers, as well as the application of mid-IR technology in spectroscopy, trace gas detection and remote sensing, optical microscopy and biomedicine. You are welcome to submit your latest original research as well as forward-looking review papers to this Special Issue.

Dr. Xiaoming Duan
Dr. Yu Ding
Guest Editors

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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 2600 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.

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Research

Open AccessArticle

High-Beam-Quality and High-Brightness 532 nm Laser with Output Power 96 W

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Crystals 2023, 13(2), 290; https://doi.org/10.3390/cryst13020290 - 08 Feb 2023

Cited by 6 | Viewed by 654

Abstract

We developed a high-power, double-intracavity-frequency, diode-side-pumped, Q-switched Nd:YAG laser. The thermal birefringence effect of Nd:YAG crystal was compensated by a quartz rotating mirror, and the stable cavity structure was designed according to the thermal focal length of a single module. A 532 nm laser with a maximum linearly polarized output power of 96 W was obtained at a pumping power of 1300 W and repetition rate of 10 kHz. The pulse width was 55.8 ns, and the beam quality was measured to be M²_x = 5.98, M²_y = 8.14 at the maximum output power; therefore, a brightness as high as 6.97 × 10⁸ W·cm⁻²·Sr was achieved. To the best of our knowledge, this is the highest brightness obtained for a high-power Nd:YAG laser at 532 nm. Full article

(This article belongs to the Special Issue Advances in Middle Infrared Laser Crystals and Its Applications (Volume II))

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Open AccessFeature PaperArticle

Intra-Cavity Tm:YAG-Ho:GdVO₄ Laser with near Diffraction Limited Beam Quality

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Crystals 2022, 12(8), 1113; https://doi.org/10.3390/cryst12081113 - 09 Aug 2022

Viewed by 810

Abstract

In this study, an Er:YAG laser pumped intra-cavity Tm:YAG-Ho:GdVO₄ laser was built and debuted at room temperature. At an incident pump power of 9.2 W, this laser obtained a maximum output power of 1.6 W with a slope efficiency of 28.0%. Additionally, the M² factors at the maximum output power were measured to be 1.06 and 1.03 in the x and y directions, respectively. The results showed that the intra-cavity pumping method of combining thulium and holmium crystals as the gain medium was an effective way to obtain a 2 μm laser with near diffraction limited beam quality. Full article

(This article belongs to the Special Issue Advances in Middle Infrared Laser Crystals and Its Applications (Volume II))

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