Two Diode Lasers Simultaneously Optically Locked by Orthogonal Polarizations of a Monolithic Confocal Cavity
PENG Yu1,2**, ZHAO Yang1,2, LI Ye1, YANG Tao1, CAO Jian-Ping1, FANG Zhan-Jun1, ZANG Er-Jun1
1Center of Time and Frequency Metrology, National Institute of Metrology, Beijing 100013 2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
Two Diode Lasers Simultaneously Optically Locked by Orthogonal Polarizations of a Monolithic Confocal Cavity
PENG Yu1,2**, ZHAO Yang1,2, LI Ye1, YANG Tao1, CAO Jian-Ping1, FANG Zhan-Jun1, ZANG Er-Jun1
1Center of Time and Frequency Metrology, National Institute of Metrology, Beijing 100013 2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084
摘要We demonstrate two self-injection locking extended cavity diode lasers (ECDLs) using resonant optical feedback independently from s- and p-polarizations of a monolithic folded Fabry–Perot confocal cavity (MFC). The relative frequency shift of adjacent axial modes of s resonance and p resonance of MFC is around 1.030 GHz. Beat note measurements between the two ECDLs are performed and present a relative linewidth of 4 kHz. With the help of a narrow-linewidth reference laser, the linewidth of s-component and p-component ECDLs are measured to be about 32 kHz and 40 kHz, respectively.
Abstract：We demonstrate two self-injection locking extended cavity diode lasers (ECDLs) using resonant optical feedback independently from s- and p-polarizations of a monolithic folded Fabry–Perot confocal cavity (MFC). The relative frequency shift of adjacent axial modes of s resonance and p resonance of MFC is around 1.030 GHz. Beat note measurements between the two ECDLs are performed and present a relative linewidth of 4 kHz. With the help of a narrow-linewidth reference laser, the linewidth of s-component and p-component ECDLs are measured to be about 32 kHz and 40 kHz, respectively.
[1] Dahmani B et al 1987 Opt. Lett. 12 876
[2] Hollberg L et al 1988 Appl. Phys. Lett. 53 944
[3] Liang W et al 2010 Opt. Lett. 35 2822
[4] Doringshoff K et al 2007 Opt. Lett. 32 2876
[5] Zhao Y et al 2011 Opt. Lett. 36 34
[6] Kane T J et al 1985 Opt. Lett. 10 65
[7] Zang E J et al 2007 Opt. Lett. 32 250
[8] Vassiliev V V et al 1998 Opt. Commun. 158 305
[9] Hjelme D R et al 1991 IEEE J. Quantum Electron. 27 352
[10] Li Y et al 2010 Chin. Phys. Lett. 27 074208
2011, Vol. 28 
