连续运转Yb:YAG板条激光器的双波长放大特性
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摘要
报道了一种室温条件下工作的高功率激光二极管(LD)端面抽运Yb:YAG板条双波长激光放大器,稳定的双波长运转在1029.6,1031.5nm。基于Yb:YAG宽带荧光特性,建立了双波长放大模型,通过数值模拟研究了不同抽运条件下激光光谱放大输出特性。通过940nm激光二极管双端抽运Yb:YAG晶体,拥有双波长光谱的种子光从晶体一端注入并进行放大。实验结果表明,在1.18kW注入时获得了6.56kW的双波长连续激光输出,与数值模拟结果相吻合。双波长激光放大理论和实验研究为进一步实现高功率光谱合成等应用奠定了基础。
This paper reports a laser diode(LD)end-pumped Yb:YAG slab dual-wavelength laser amplifier with high power working at room temperature.The dual-wavelength stably operates at 1029.6,1031.5 nm.Based on the broadband fluorescence characteristic of Yb:YAG,the dual-wavelength amplification model is built and corresponding numerical simulation is taken to study the laser spectrum amplification output properties under different pump conditions.940 nm laser diodes is used to pump the Yb:YAG crystal at two ends.The seed laser with the dual-wavelength spectrum is injected from one end of the crystal and amplified.Experimental results show that continuouswave(CW)dual-wavelength laser output power of 6.56 kW is acquired when the seed injection is 1.18 kW,which matches the simulation results.These theoretical and experimental researches of dual-wavelength laser amplification can lay the foundation for the applications such as high-power spectral combination,etc.
This paper reports a laser diode(LD)end-pumped Yb:YAG slab dual-wavelength laser amplifier with high power working at room temperature.The dual-wavelength stably operates at 1029.6,1031.5 nm.Based on the broadband fluorescence characteristic of Yb:YAG,the dual-wavelength amplification model is built and corresponding numerical simulation is taken to study the laser spectrum amplification output properties under different pump conditions.940 nm laser diodes is used to pump the Yb:YAG crystal at two ends.The seed laser with the dual-wavelength spectrum is injected from one end of the crystal and amplified.Experimental results show that continuouswave(CW)dual-wavelength laser output power of 6.56 kW is acquired when the seed injection is 1.18 kW,which matches the simulation results.These theoretical and experimental researches of dual-wavelength laser amplification can lay the foundation for the applications such as high-power spectral combination,etc.
引文
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[3]Wang Z K,Du S J,Wang J H,et al.All fiber tunable-or dual-wavelength Yb-doped fiber laser covering from dissipative soliton to dissipative soliton resonance[J].Chinese Optics Letters,2016,14(4):041401.
[4]Bai Y B,Xiang W H,Zu P,et al.Tunable two wavelengths linear-cavity Yb-doped fiber laser based on volume grating[J].Chinese Journal of Lasers,2011,38(11):1102004.白扬博,向望华,祖鹏,等.基于体光栅的可调谐线型腔双波长掺镱光纤激光器[J].中国激光,2011,38(11):1102004.
[5]Suzuki T,Yazawa T,Sasaki O.Two-wavelength laser diode interferometer with time-sharing sinusoidal phase modulation[J].Applied optics,2002,41(10):1972-1976.
[6]Pinto A M R,Frazao O,Santos J L,et al.Interrogation of a suspended-core Fabry-Perot temperature sensor through a dual wavelength Raman fiber laser[J].Journal of Lightware Technology,2010,28(21):3149-3155.
[7]Kong F Q,Romeira B,Zhang J J,et al.A dualwavelength fiber ring laser incorporating an injectioncoupled optoelectronic oscillator and its application to transverse load sensing[J].Journal of Lightware Technology,2014,32(9):1784-1793.
[8]Baxter J B,Guglietta G W.Terahertz spectroscopy[J].Analytical Chemistry,2011,83(12):4342-4368.
[9]Reid C B,Pickwell-MacPherson E,Laufer J G,et al.Accuracy and resolution of THz reflection spectroscopy for medical imaging[J].Physics in Medicine&Biology,2010,55(16):4825-4838.
[10]Zhang J,Liu H L,Xia J,et al.Orthogonally polarized dual-wavelength Nd:YLiF4 laser[J].Chinese Optics Letters,2015,13(3):031402.
[11]Sangla D,Martial I,Aubry N,et al.High power laser operation with crystal fibers[J].Applied Physics B,2009,97(2):263-273.
[12]Zhou S J,Gu P,Li X L,et al.Continuous wave dual-wavelength Nd:YVO4laser working at 1064and1066nm[J].Chinese Optics Letters,2017,15(7):071401.
[13]Yu H W,Xu M J,Duan W T,et al.Investigation on pumping dynamics and pulsed energy storagy perfermance of Yb ions[J].Acta Physica Sinica,2007,66(7):4158-4168.於海武,徐美健,段文涛,等.Yb离子抽运动力学及脉冲储能特性研究[J].物理学报,2007,56(7):4158-4168.
[14]Brasseur J K,Abeeluck A K,Awtry A R,et al.2.3kW cryogenically cooled Yb:YAG laser[C].International Quantum Electronics Conference on Lasers and Electro-Optics,2009:CThR1.
[15]Fu X,Gong M.Single-side-pumped slab laser amplifier chain:design and numerical modeling[J].IEEE J Quantum Electron,2010,46(8):1197-1205.
[16]Chen X,Xu L,Hu H,et al.High-efficiency,highaverage-power,CW Yb:YAG zigzag slab master oscillator power amplifier at room temperature[J].Optics Express,2016,24(21):24517-24523.
[17]Casagrande O,Deguil-Robin N,Garrec B L,et al.Time and spectrum resolved model for quasi-threelevel gain-switched lasers[J].IEEE J Quantum Electron,2007,43(2):206-212.
[18]Bourdet G L.Theoretical investigation of quasi-threelevel longitudinally pumped continuous wave lasers[J].Applied Optics,2000,39(6):966-971.