348.9 nm Intra-Cavity Frequency-Doubling Ultraviolet Laser in Blue Laser Diode Pumped Pr:YLF Crystal

NIU Na1 QU Dapeng1 DOU Wei1 REN Guangsheng1 ZHOU Yang1 XIA Lei1 LÜ Minhang1 ZHENG Quan1,2

(1.Changchun New Industries Optoelectronics Technology Co., Ltd., Changchun, Jilin, China 130012)
(2.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China 130033)

【Abstract】A 348.9 nm intra-cavity frequency-doubling ultraviolet laser in blue laser diode pumped Pr: YLF crystal is designed, in which a Z-folded cavity structure is adopted. A 444 nm blue laser diode with pump power of 1.4 W and a 469 nm blue laser diode with pump power of 1.5 W obtained are combined by a 45° combiner film as a pump laser for the Pr: YLF crystal which has a length of 5 mm and a doping concentration (mass fraction) of 0.5%. In addition, the type I phase-matched LBO crystal is chosen for frequency doubling. By optimizing the resonator mirror coating and structural design, we achieve a continuous ultraviolet laser output with a maximum power of 132.2 mW, a central wavelength of 348.9 nm, and an optical-to-optical conversion efficiency of 4.5% when pump power is the maximum.

【Keywords】 laser; ultraviolet laser; Pr:YLF crystal; blue laser diode;

【DOI】

【Funds】 Science and Technology Program of Changchun City (16SS18)

Download this article

(Translated by CAI ZJ)

    References

    [1] Nie MM, Jiang YW, Lu FY, et al. Introduction of the project 'Ultraviolet laser for manufacturing' [J]. Laser & Optoelectronics Progress, 2017, 54 (12): 123601 (in Chinese).

    [2] Wu D C, Wei B, Tang G, et al. Turbidity disturbance compensation for UV-VIS spectrum of waterbody based on Mie scattering [J]. Acta Optica Sinica, 2017, 37 (2): 0230007 (in Chinese).

    [3] Liu Q, Yan X P, Chen H L, et al. New progress in high-power all-solid-state ultraviolet laser [J]. Chinese Journal of Lasers, 2010, 37 (9): 2289–2298 (in Chinese).

    [4] Richter A, Heumann E, Osiac E, et al. Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser [J]. Optics Letters, 2004, 29 (22): 2638–2640.

    [5] Richter A, Heumann E, Huber G, et al. Power scaling of semiconductor laser pumped praseodymium lasers [J]. Optics Express, 2007, 15 (8): 5172–5178.

    [6] Cornacchia F, Richter A, Heumann E, et al. Visible laser emission of solid state pumped LiLuF4: Pr3+ [J]. Optics Express, 2007, 15 (3): 992–1002.

    [7] Cornacchia F, Di Lieto A, Tonelli M, et al. Efficient visible laser emission of GaN laser diode pumped Prdoped fluoride scheelite crystals [J]. Optics Express, 2008, 16 (20): 15932–15941.

    [8] Gün T, Metz P, Huber G, et al. Power scaling of laser diode pumped Pr3+: LiYF4 CW lasers efficient laser operation at 522. 6, 545.9, 607.2, and 639.5 nm [J]. Optics Letters, 2011, 36 (6): 1002–1004.

    [9] Xu B, Camy P, Doualan J L, et al. Visible laser operation of Pr3+-doped fluoride crystals pumped by a 469 nm blue laser [J]. Optics Express, 2011, 19 (2): 1191–1197.

    [10] Huang S L, Liu Z, Zeng C H, et al. Blue laser diode pumped Pr: YLF green laser [J]. Chinese Journal of Lasers, 2012, 39 (12): 1202005 (in Chinese).

    [11] Liu Z, Cai Z P, Huang S L, et al. Diode-pumped Pr3+: LiYF4 continuous-wave deep red laser at 698nm [J]. Journal of the Optical Society of America B, 2013, 30 (2): 302–305.

    [12] Richter A, Pavel N, Heumann E, et al. Continuouswave ultraviolet generation at 320nm by intracavity frequency doubling of red-emitting praseodymium lasers [J]. Optics Express, 2006, 14 (8): 3282–3287.

    [13] Ostroumov V, Seelert W, Hunziker L, et al. UVgeneration by intracavity frequency doubling of an OPS-pumped Pr: YLF laser with 500 mW of CW power at 360nm [J]. Proceedings of SPIE, 2007, 6451: 645103.

    [14] Ostroumov V, Seelert W, Hunziker L, et al. 522/261nm CW generation of Pr: YLF laser pumped by OPS laser [J]. Proceedings of SPIE, 2007, 6451: 645104.

    [15] Ostroumov V, Seelert W. 1 W of 261 nm cw generation in a Pr3+: LiYF4 laser pumped by an optically pumped semiconductor laser at 479nm [J]. Proceedings of SPIE, 2008, 6871: 68711K.

    [16] Liu Z, Cai Z P, Xu B, et al. Continuous-wave ultraviolet generation at 349 nm by intracavity frequency doubling of a diode-pumped Pr: LiYF4 laser [J]. IEEE Photonics Journal, 2013, 5 (4): 1500905.

This Article

ISSN:0258-7025

CN: 31-1339/TN

Vol 45, No. 12, Pages 19-23

December 2018

Downloads:0

Share
Article Outline

Abstract

  • 1 Introduction
  • 2 Experimental study
  • 3 Conclusions
  • References