796 nm Diode-pumped 1.88 W Continuous-wave Tm: LYF Laser

被引：0

作者：

Ding B.-L. ^{[1
]}

Zhou X. ^{[1
]}

Xia H.-P. ^{[1
]}

Zhang B.-T. ^{[2
]}

Chen B.-J. ^{[3
]}

机构：

[1] Key Laboratory of Photo-electronic Materials, Ningbo University, Ningbo

[2] State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan

[3] Department of Physics, Dalian Maritime University, Dalian

来源：

Xia, Hai-Ping (hpxcm@nbu.edu.cn); Zhang, Bai-Tao (btzhang@sdu.edu.cn) | 1600年 / Chines Academy of Sciences卷 / 41期

基金：

中国国家自然科学基金;

关键词：

2.0; μm; Continuous-wave(CW); Continuous-wave(CW) mode-locked; Thulium ion;

D O I：

10.37188/fgxb20204107.0819

中图分类号：

学科分类号：

摘要：

High quality LiYF4(LYF) single crystals in big size doped with Tm3+ in 0.8% and 1.3% concentrations were grown by Bridgman method. The absorption spectra and emission spectra were measured. The maximum absorption cross section and maximum emission cross section of 3F4 level were calculated to be 0.25×10-20 cm2 and 0.33×10-20 cm2, respectively. The laser output of Tm3+ doped LYF crystals in the ~2.0 μm band was carried out by using short flat-flat cavity taking 796 nm semiconductor laser as pumping source. A maximum CW output of 1.88 W at an absorbed pump power of 3.4 W was achieved from the Tm3+ doped LYF single crystal, and the corresponding conversion efficiency and slope efficiency for the laser output were 51% and 57%, respectively. A Tm-doped LYF single crystal was pumped using a semiconductor saturable absorption mirror, and its operation in a ~2.0 μm band CW laser was tested. When the maximum pump power is 3.5 W, the maximum average output power of the mode-locked laser is 200 mW. At this time, the mode-locked pulse width is about 20 ps, the corresponding repetition frequency is 63.86 MHz, and the center line is 1.88 μm. The results show that the Tm-doped LYF single crystal is a~2 μm band ultrafast laser crystal with good physical properties. © 2020, Science Press. All right reserved.

引用

页码：819 / 825

页数：6

共 19 条

[1] WULFMEYER V, RANDALL M, BREWER A, Et al., 2 μm Doppler lidar transmitter with high frequency stability and low chirp, Opt. Lett, 25, 17, pp. 1228-1230, (2000)
[2] JACKSON S D., The spectroscopic and energy transfer characteristics of the rare earth ions used for silicate glass fibre lasers operating in the shortwave infrared, Laser Photonics Rev, 3, 5, pp. 466-482, (2009)
[3] SHEN D Y, MACKENZIE J I, SAHU J K, Et al., High-power and ultra-efficient operation of a Tm3+-doped silica fiber laser, Conference Proceedings from OSA Publishing, (2005)
[4] WU C T, JIANG Y, DAI T Y, Et al., Research progress of 2 μm Ho-doped solid-state laser, Chin. J. Lumin, 39, 11, pp. 1584-1597, (2018)
[5] LI C Z, YAO C F, WANG S B, Et al., Tm3+/Ho3+ co-doped fluorotellurite microstructure fiber for 2.1 μm lasing, Chin. J. Lumin, 37, 1, pp. 74-80, (2016)
[6] RAMEIX A, BOREL C, CHAMBAZ B, Et al., An efficient, diode-pumped, 2 μm Tm: YAG waveguide laser, Opt. Commun, 142, 4-6, pp. 239-243, (1997)
[7] WU C T, JU Y L, CHEN F, Et al., Research on 2 μm solid-state lasers, Laser Phys, 22, 4, pp. 635-647, (2012)
[8] JACKSON S D, MOSSMAN S., High-power diode-cladding-pumped Tm3+, Ho3+-doped silica fibre laser, Appl. Phys. B, 77, 5, pp. 489-491, (2003)
[9] OSWALD J, SULC J, Et al., Tm: LuVO4-a new material for 2 μm diode-pumped lasers, Conference Proceedings from OSA Publishing, (2006)
[10] YORULMAZ I, SENNAROGLU A., Low-threshold diode-pumped 2.3 μm Tm3+: YLF lasers, IEEE. J. Sel Top. Quantum Electron, 24, 5, (2018)

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