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Ultralong π-phase shift fiber Bragg grating empowered single-longitudinal mode DFB phosphate fiber laser with low-threshold and high-efficiency.
Sci Rep. 2018 Sep 03; 8(1):13131.SR

Abstract

Phosphate glass fiber is one of the candidates for building compact fiber lasers because of its capability of high-concentration of rare-earth ions doping in fiber core. Nevertheless, it is challenging for the integration of UV-written intra-core fiber Bragg gratings into the fiber laser cavity due to the low photosensitivity of phosphate glass fiber. The research presented in this paper will focus on demonstration of UV-written Bragg gratings in phosphate glass fiber and its application in direct-written short monolithic single-frequency fiber lasers. A 5-cm-long strong π-phase shift Bragg grating structure is direct-inscribed into the Er/Yb co-doped gain fiber using an excimer laser. The fiber laser device emits output power of 10.44 mW with a slope efficiency of 21.5% and the threshold power is about 42.8 mW. Single-longitudinal mode operation is validated by radio frequency spectrum measurement. Moreover, the output spectrum at the highest power shows an excellent optical signal to noise ratio of about 70 dB. These results, to the best of our knowledge, show the lowest power threshold and highest efficiency among the reports that using the same structure to achieve single-longitudinal mode laser output.

Authors+Show Affiliations

College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, 410073, China.College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha, 410073, China. zhoupu203@163.com.Department of Electrical and Computer Engineering, Ryerson University, 350 Victoria St., Toronto, Ontario, M5B 2K3, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30177796

Citation

Jiang, Man, et al. "Ultralong Π-phase Shift Fiber Bragg Grating Empowered Single-longitudinal Mode DFB Phosphate Fiber Laser With Low-threshold and High-efficiency." Scientific Reports, vol. 8, no. 1, 2018, p. 13131.
Jiang M, Zhou P, Gu X. Ultralong π-phase shift fiber Bragg grating empowered single-longitudinal mode DFB phosphate fiber laser with low-threshold and high-efficiency. Sci Rep. 2018;8(1):13131.
Jiang, M., Zhou, P., & Gu, X. (2018). Ultralong π-phase shift fiber Bragg grating empowered single-longitudinal mode DFB phosphate fiber laser with low-threshold and high-efficiency. Scientific Reports, 8(1), 13131. https://doi.org/10.1038/s41598-018-31528-w
Jiang M, Zhou P, Gu X. Ultralong Π-phase Shift Fiber Bragg Grating Empowered Single-longitudinal Mode DFB Phosphate Fiber Laser With Low-threshold and High-efficiency. Sci Rep. 2018 Sep 3;8(1):13131. PubMed PMID: 30177796.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultralong π-phase shift fiber Bragg grating empowered single-longitudinal mode DFB phosphate fiber laser with low-threshold and high-efficiency. AU - Jiang,Man, AU - Zhou,Pu, AU - Gu,Xijia, Y1 - 2018/09/03/ PY - 2017/11/01/received PY - 2018/07/20/accepted PY - 2018/9/5/entrez PY - 2018/9/5/pubmed PY - 2018/9/5/medline SP - 13131 EP - 13131 JF - Scientific reports JO - Sci Rep VL - 8 IS - 1 N2 - Phosphate glass fiber is one of the candidates for building compact fiber lasers because of its capability of high-concentration of rare-earth ions doping in fiber core. Nevertheless, it is challenging for the integration of UV-written intra-core fiber Bragg gratings into the fiber laser cavity due to the low photosensitivity of phosphate glass fiber. The research presented in this paper will focus on demonstration of UV-written Bragg gratings in phosphate glass fiber and its application in direct-written short monolithic single-frequency fiber lasers. A 5-cm-long strong π-phase shift Bragg grating structure is direct-inscribed into the Er/Yb co-doped gain fiber using an excimer laser. The fiber laser device emits output power of 10.44 mW with a slope efficiency of 21.5% and the threshold power is about 42.8 mW. Single-longitudinal mode operation is validated by radio frequency spectrum measurement. Moreover, the output spectrum at the highest power shows an excellent optical signal to noise ratio of about 70 dB. These results, to the best of our knowledge, show the lowest power threshold and highest efficiency among the reports that using the same structure to achieve single-longitudinal mode laser output. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/30177796/Ultralong_π_phase_shift_fiber_Bragg_grating_empowered_single_longitudinal_mode_DFB_phosphate_fiber_laser_with_low_threshold_and_high_efficiency_ L2 - http://dx.doi.org/10.1038/s41598-018-31528-w DB - PRIME DP - Unbound Medicine ER -
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