Volume 14, Issue 1 (Winter-Spring 2020)                   IJOP 2020, 14(1): 75-84 | Back to browse issues page

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Tarkashvand M, Farahbod A H, Hashemizadeh S A. Study of the Spatiotemporal Behavior of LED-Pumped Ce:Nd:YAG Laser. IJOP. 2020; 14 (1) :75-84
URL: http://ijop.ir/article-1-396-en.html
1- Department of plasma and nuclear fusion, Nuclear science technology research institute, North Kargar, Tehran, Iran, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran
2- Department of plasma and nuclear fusion, Nuclear science technology research institute, North Kargar, Tehran, Iran
3- Department of Physics, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran
Abstract:   (384 Views)
In this paper, the mode structure and time behavior of a LED-pumped Ce:Nd:YAG laser have been studied. Four blue LED bars with total 128 LEDs at 460 nm are utilized to pump a 3 mm diameter laser rod. Using a Cr4+:YAG passive optical switch with 96% initial transmission, and a low loss stable optical resonator and 0.7 J pumping energy, a single 17 micro-joules Q-switched laser pulse with 240 ns pulse-width and nearly TEM00 mode profile was produced. By increasing the pumping energy Ep up to 0.8 J, the mode structure remained intact. Further increasing of Ep, the laser mode changed to TEM10. Numerical calculations show that the central high gain area of the laser rod and saturation mechanism of the passive Q-switch behaves like as a soft aperture to enforce the laser resonator to oscillate on a low order transverse mode. For laser free-running, the TEM00 mode has not been achieved and the optical resonator produced high order transverse mode patterns.
Full-Text [PDF 463 kb]   (155 Downloads)    
Type of Study: Applicable | Subject: Special
Received: 2019/09/2 | Revised: 2019/12/6 | Accepted: 2020/08/3 | Published: 2020/09/10

1. A. Barbet, F. Balembois, A. Paul, J.P. Blanchot, A.L. Viotti, J. Sabater, and F. Druon, P. Georges, "Revisiting of LED pumped bulk laser: first demonstration of Nd:YVO4 LED pumped laser," Opt. Lett. Vol. 39, pp. 6731-6734, 2014. [DOI:10.1364/OL.39.006731]
2. B. Villars, E.S. Hill, and C.G. Durfee, "Design and development of a high-power LED-pumped Ce:Nd:YAG laser," Opt. Lett. Vol. 40, pp. 3049-3052, 2015. [DOI:10.1364/OL.40.003049]
3. K.Y. Huang, C.K. Su, M.W. Lin, Y.C. Chiu, and Y.C. Huang, "Efficient 750-nm LED-pumped Nd:YAG laser," Opt. Express, Vol. 24, pp. 12043-12054, 2016. [DOI:10.1364/OE.24.012043]
4. M. Tarkashvand, A.H. Farahbod, and S.A. Hashemizadeh, "First demonstration of green and amber LED-pumped Nd:YAG laser," Laser Physics, Vol. 28, pp. 055801 (1-7), 2018. [DOI:10.1088/1555-6611/aaa9ed]
5. M. Tarkashvand, A.H. Farahbod, and S.A. Hashemizadeh, "Experimental Study of Passively Q-switched LED-Pumped Solid-state Laser, 24th Iranian Conference on Optics and Photonics and 9th Iranian Conference on Photonics Engineering and Technology," University of Shahrekord, Jan. 30-Feb. 1, 2018.
6. M. Tarkashvand, A.H. Farahbod, and S.A. Hashemizadeh, "Passively Q-switched LED-pumped Ce:Nd:YAG laser," Iranian Journal of Physics Research, Vol. 18, pp. 477-484, 2018. [DOI:10.29252/ijpr.18.3.477]
7. C.Y. Cho, C.C. Pu, K.W. Su, and Y. F. Chen, "LED-side-pumped Nd:YAG laser with>20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser," Opt. Lett. Vol. 42, pp. 2394-2397, 2017. [DOI:10.1364/OL.42.002394]
8. P. Pichon, A. Barbet, D. Blengino, P. Legavre, T. Gallinelli, F. Druon, J.P. Blanchot, F. Balembois , S. Forget, S. Chénais, and P. Georges, "High-radiance light sources with LED-pumped luminescent concentrators applied to pump Nd:YAG passively Q-switched laser," Opt. Laser Technol. Vol. 96, pp. 7-12, 2017. [DOI:10.1016/j.optlastec.2017.04.009]
9. C.Y. Cho, C.C. Pu, Y.F. Chen, and K. W. Su, "Energy scale-up and mode-quality enhancement of the LED-pumped Nd:YAG Q-switched laser achieving a millijoule green pulse," Opt. Lett. Vol. 44, pp. 3202-3205, 2019. [DOI:10.1364/OL.44.003202]
10. Y. Li, S. Zhou, H. Lin, X. Hou, and W. Li, "Intense 1064 nm emission by the efficient energy transfer from Ce3+ to Nd3+ in Ce/Nd four YAG transparent ceramics," Opt. Mater, Vol. 32, pp. 1223-1226, 2010. [DOI:10.1016/j.optmat.2010.04.003]
11. OptiChamber 2014 Software (version 2.1) for Modeling Laser-Pumping Trains © Centre "TOM" (C) 2000-2014, Centre "Technology of Optical Materials," 36/1 Babushkina str. St.Petersburg 193171, Russia.
12. W. Koechner, Solid-State Laser Engineering, 6th Ed. Springer, 2006.
13. J.J. Degnan, "Optimization of Passively Q-Switched Lasers," ‎IEEE J. Quantum Electron. Vol. 31, pp. 1890-1901, 1995. [DOI:10.1109/3.469267]
14. X. Zhang, S. Zhao, Q. Wang, Q. Zhang, L. Sun, and S. Zhang, "Optimization of Cr4+ doped saturable-absorber Q-switched lasers," ‎IEEE J. Quantum Electron. Vol. 33, pp. 2286-2294, 1997. [DOI:10.1109/3.644112]
15. J. Dong, "Numerical modeling of CW-pumped repetitively passively Q-switched Yb:YAG lasers with Cr:YAG as saturable absorber," Opt. Commun. Vol. 226, pp. 337-344, 2003. [DOI:10.1016/j.optcom.2003.09.008]
16. Y. Kalisky, A. Ben-Amar Baranga, Y. Shimony, and M.R. Kokta, "Cr4+ doped garnets: novel laser materials and non-linear saturable absorbers," Opt. Mater. Vol. 8, pp.129-134, 1997. [DOI:10.1016/S0925-3467(97)00023-2]
17. G. Ghani Moghadam and A.H. Farahbod, "General formula for calculation of amplified spontaneous emission intensity," Opt. Quant. Electron. Vol. 48, pp. 227 (2-6), 2016. [DOI:10.1007/s11082-016-0505-2]
18. J. Chen and J.N. Chen, "Five Simultaneously Q-Switch Mode-Locked Passive Laser Modulators," Opt. Rev. Vol. 13, pp. 427-435, 2006. [DOI:10.1007/s10043-006-0427-5]

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