Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser

Wang, Zefeng; Luo, Daping; Xie, Gehui; Deng, Zejiang; Gu, Chenglin; Li, Wenxue

doi:10.3390/photonics12010050

Open AccessArticle

Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser

by

Zefeng Wang

,

Daping Luo

^*,

Gehui Xie

,

Zejiang Deng

,

Chenglin Gu

and

Wenxue Li

^*

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

^*

Authors to whom correspondence should be addressed.

Photonics 2025, 12(1), 50; https://doi.org/10.3390/photonics12010050

Submission received: 14 December 2024 / Revised: 3 January 2025 / Accepted: 7 January 2025 / Published: 8 January 2025

(This article belongs to the Special Issue Advanced Lasers and Their Applications, 2nd Edition )

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Abstract

A tunable high-power 60 MHz ultraviolet pulse laser directly produced by the extra-cavity fourth-order harmonic generation of a self-similar amplification infrared pulse laser is reported in this study. Utilizing the self-similar pulse evolution and the self-phase modulation in a self-similar amplifier, the system generates a 58.9 W pulse train with a spectral half-width of 85.4 nm, corresponding to a pulse duration of 36 fs. To obtain the ultraviolet pulses from the infrared pulses, a single-pass frequency quadrupling system comprising two cascaded β-BBOs was used. The ultraviolet spectra can be tuned within a spectral range of 253.6 to 275 nm owing to the broadband infrared seed spectra. The maximum ultraviolet average power of 1.44 W was achieved at 275 nm with spectral half-width and an infrared-to-ultraviolet efficiency of 1.1 nm and 2.44%, respectively. To the best of our knowledge, this is the first demonstration of tunable high-power ultraviolet pulse generation from a self-similar amplification Yb-fiber laser.

Keywords: fourth-order harmonic generation; self-similar fiber amplification; ultraviolet pulse

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MDPI and ACS Style

Wang, Z.; Luo, D.; Xie, G.; Deng, Z.; Gu, C.; Li, W. Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser. Photonics 2025, 12, 50. https://doi.org/10.3390/photonics12010050

AMA Style

Wang Z, Luo D, Xie G, Deng Z, Gu C, Li W. Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser. Photonics. 2025; 12(1):50. https://doi.org/10.3390/photonics12010050

Chicago/Turabian Style

Wang, Zefeng, Daping Luo, Gehui Xie, Zejiang Deng, Chenglin Gu, and Wenxue Li. 2025. "Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser" Photonics 12, no. 1: 50. https://doi.org/10.3390/photonics12010050

APA Style

Wang, Z., Luo, D., Xie, G., Deng, Z., Gu, C., & Li, W. (2025). Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser. Photonics, 12(1), 50. https://doi.org/10.3390/photonics12010050

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Tunable Ultraviolet Pulse Generation from a High-Power Self-Similar-Amplification Yb-Fiber Laser

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