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We report on the generation of 2.06 W of tunable cw light at 780 nm by a single-pass frequency doubling in a PPMgO:LN crystal with a seeded high-power fiber amplifier. A 1560 nm distributed feedback (DFB) diode laser, a Littman-type grating external-cavity diode laser (ECDL) and a DFB-type erbium-doped fiber laser (DFB-EDFL) were separately used as a seeding laser source of an erbium-doped fiber amplifier (EDFA). Here we use the EDFA which has a narrow linewidth option, the fundamental frequency light will not be obviously broadened. The influence of laser linewidth on the conversion efficiency of frequency doubling is investigated. The injection power and output power of EDFA must be consistent. So when temperature of the PPMgO:LN crystal is fixed, the conversion efficiency for different seeding resources can be obtained as follows. When the fundamental power is 12.42 W, using the DFB as seeding resource yields 1.36 W of 780 nm doubling output, and the corresponding conversion efficiency is 11.0%. Using the ECDL as seeding source yields 1.78 W of 780 nm doubling output, and the corresponding conversion efficiency is 14.3%. While using the DFB-EDFL as seeding source yields 2.06 W of 780 nm doubling output, and the conversion efficiency is 16.6%. The measured laser linewidths of the three seeding sources are 1.2 MHz, 200 kHz, and 600 Hz for the DFB, ECDL, and DFB-EDFL, respectively. The experimental results show that the narrower laser linewidth, the higher doubling efficiency, and the experimental results agree with our theoretical analysis.
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Keywords:
- frequency doubling /
- laser linewidth /
- conversion efficiency
[1] Thompson R J, Tu M, Aveline D C, Lundblad N, Maleki L 2003 Opt. Express 11 1709
[2] Arnoldus H F, George T F 1987 J. Opt. Soc. Am. B 4 195
[3] Tian X T, Li Y M, Liu Q, Zhang K S 2009 Chin. Phys. B 18 2324
[4] Yang J F, Yang B D, Gao J, Zhang T C, Wang J M 2010 Acta Sin. Quant. Opt. 16 41 (in Chinese) [杨建峰, 杨保东, 高静, 张天才, 王军民 2010 量子光学学报 16 41]
[5] Guo S L, Yang J F, Yang B D, Zhang T C, Wang J M 2010 Proc. SPIE 7846 784619
[6] Vyatkin M Y, Dronov A G, Chernikov M A, Gapontsev D V, Gapontsev V P 2005 Proc. SPIE 5709 125
[7] Guo S L, Han Y S, Wang J, Yang B D, He J, Wang J M 2012 Acta Opt. Sin. 32 031901 (in Chinese) [郭善龙, 韩亚帅, 王杰, 杨保东, 何军, 王军民 2012 光学学报 32 031901]
[8] Boyd G D, Kleinman D A 1968 J. Appl. Phys. 39 3597
[9] Fejer M M, Magel G A, Jundt D H, Byer R L 1992 IEEE J. Quant. Electron 28 2631
[10] Scully M O, Zubairy M S 1997 Quantum Optics (Cambridge: Cambridge University Press) p342
[11] Ma J Q 2010 M. S. Dissertation (Hunan: National University of Defense Technology) (in Chinese) [马俊青 2010 硕士学位论文 (湖南: 国防科学技术大学)]
[12] Chaitanya K S, Samanta G K, Ebrahim-Zadeh M 2009 Opt. Express 17 13711
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[1] Thompson R J, Tu M, Aveline D C, Lundblad N, Maleki L 2003 Opt. Express 11 1709
[2] Arnoldus H F, George T F 1987 J. Opt. Soc. Am. B 4 195
[3] Tian X T, Li Y M, Liu Q, Zhang K S 2009 Chin. Phys. B 18 2324
[4] Yang J F, Yang B D, Gao J, Zhang T C, Wang J M 2010 Acta Sin. Quant. Opt. 16 41 (in Chinese) [杨建峰, 杨保东, 高静, 张天才, 王军民 2010 量子光学学报 16 41]
[5] Guo S L, Yang J F, Yang B D, Zhang T C, Wang J M 2010 Proc. SPIE 7846 784619
[6] Vyatkin M Y, Dronov A G, Chernikov M A, Gapontsev D V, Gapontsev V P 2005 Proc. SPIE 5709 125
[7] Guo S L, Han Y S, Wang J, Yang B D, He J, Wang J M 2012 Acta Opt. Sin. 32 031901 (in Chinese) [郭善龙, 韩亚帅, 王杰, 杨保东, 何军, 王军民 2012 光学学报 32 031901]
[8] Boyd G D, Kleinman D A 1968 J. Appl. Phys. 39 3597
[9] Fejer M M, Magel G A, Jundt D H, Byer R L 1992 IEEE J. Quant. Electron 28 2631
[10] Scully M O, Zubairy M S 1997 Quantum Optics (Cambridge: Cambridge University Press) p342
[11] Ma J Q 2010 M. S. Dissertation (Hunan: National University of Defense Technology) (in Chinese) [马俊青 2010 硕士学位论文 (湖南: 国防科学技术大学)]
[12] Chaitanya K S, Samanta G K, Ebrahim-Zadeh M 2009 Opt. Express 17 13711
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