Enhancing Coherent Combining Efficiency via Choosing Appropriate Lasing Wavelength in a Michelson Compound Cavity Based on Two 3dB Fibre Loop Mirrors and One Fibre Bragg Grating
LIU Feng-Nian, JIA Xiu-Jie, LIU Yan-Ge, YUAN Shu-Zhong, DONG Xiao-Yi
Key Laboratory of Opto-Electronic Information and Technology (Ministry of Education), Institute of Modern Optics, Nankai University, Tianjin 300071
Enhancing Coherent Combining Efficiency via Choosing Appropriate Lasing Wavelength in a Michelson Compound Cavity Based on Two 3dB Fibre Loop Mirrors and One Fibre Bragg Grating
LIU Feng-Nian;JIA Xiu-Jie;LIU Yan-Ge;YUAN Shu-Zhong;DONG Xiao-Yi
Key Laboratory of Opto-Electronic Information and Technology (Ministry of Education), Institute of Modern Optics, Nankai University, Tianjin 300071
摘要Enhancing coherent combining efficiency via choosing appropriate lasing wavelength in a Michelson compound cavity based on two 3dB fibre loop mirrors and one fibre Bragg grating (FBG) has been experimentally demonstrated. The FBG with 4.5% reflectivity is replaced at the cleaved facet with 4% Fresnel reflection. A high coherent combining efficiency of 93.5% is obtained when the FBG with central wavelength at 1559.845nm is introduced into the cavity, while it is only 90.1% combining efficiency with the FBG at central wavelength 1557.830nm. In comparison with other reports, the proposed compound-cavity laser has the advantage of needless tuning FBG to obtain the coherent condition, and it is facile to ascertain the seemly wavelength lasing for a Michelson compound cavity.
Abstract：Enhancing coherent combining efficiency via choosing appropriate lasing wavelength in a Michelson compound cavity based on two 3dB fibre loop mirrors and one fibre Bragg grating (FBG) has been experimentally demonstrated. The FBG with 4.5% reflectivity is replaced at the cleaved facet with 4% Fresnel reflection. A high coherent combining efficiency of 93.5% is obtained when the FBG with central wavelength at 1559.845nm is introduced into the cavity, while it is only 90.1% combining efficiency with the FBG at central wavelength 1557.830nm. In comparison with other reports, the proposed compound-cavity laser has the advantage of needless tuning FBG to obtain the coherent condition, and it is facile to ascertain the seemly wavelength lasing for a Michelson compound cavity.
(Resonators, cavities, amplifiers, arrays, and rings)
引用本文:
LIU Feng-Nian;JIA Xiu-Jie;LIU Yan-Ge;YUAN Shu-Zhong;DONG Xiao-Yi. Enhancing Coherent Combining Efficiency via Choosing Appropriate Lasing Wavelength in a Michelson Compound Cavity Based on Two 3dB Fibre Loop Mirrors and One Fibre Bragg Grating[J]. 中国物理快报, 2007, 24(4): 929-932.
LIU Feng-Nian, JIA Xiu-Jie, LIU Yan-Ge, YUAN Shu-Zhong, DONG Xiao-Yi. Enhancing Coherent Combining Efficiency via Choosing Appropriate Lasing Wavelength in a Michelson Compound Cavity Based on Two 3dB Fibre Loop Mirrors and One Fibre Bragg Grating. Chin. Phys. Lett., 2007, 24(4): 929-932.
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