介绍了633 nm半导体激光频标系统,高重复频率锁相飞秒激光器系统和绝对频率测量系统的建立以及测量碘分子超精细跃迁绝对频率的系统方案.633 nm半导体激光频标采用三次微分稳频方法,将激光频率锁定在碘分子谱线上,获得0.5 mW的稳频激光输出.飞秒激光稳频系统通过锁相电路将飞秒激光的高重复频率(760 MHz)和初始频率稳定在微波频率标准上,从而得到稳定的飞秒光梳,其稳定度优于6.44×10-13.在此基础上建立了绝对频率的直接测量系统,即利用波长计直接测量光梳的齿数n,并通过拍频法,测出633 nm半导体激光频标与飞秒光梳的差频,从而计算出相应谱线的绝对频率.这样,通过锁相飞秒激光器,建立了微波频率标准到光学频率标准的传递,为进一步的基础研究工作奠定了基础.
参考文献
| [1] | Riehle F,Schnatz H,Lipphardt B,et al.The optical calcium frequency standard[J].IEEE,Transactions on Instrumentation and Measurement,1999,48(2):299-300. |
| [2] | Diddams S A.An optical clock based on a single trapped 199 Hg+ Ion[J].Science,2001,293(5531):825-828. |
| [3] | Reichert J,Holzwarth R,et al.Measuring the frequency of light with mode-locked lasers[J].Opt.Commun.,1999,172(1):59-68. |
| [4] | Hall J L.Optical frequency measurement:40 Years of.technology revolutions[J].IEEE,Select.Topics Quantum Electron,2000,6(6):1136-1144. |
| [5] | Yuan Jie,Chen Xuzong,et al.Design and third harmonic frequency stabilizationof the external cavity semicon-ductor laser[J].Infrared and Laser Engineering (红外与激光工程),2007,36(2):152-154 (in Chinese). |
| [6] | Chen Xuzong,Zhang Keming,et al.Frequency stabilized tunable diode laser and strong transition iodine hyperine spectra at 633 nm[J].SPIE,1998,3547:194-202. |
| [7] | Quinn T J.Practical realization of the definition of the metre[J].Metrologia,1999,36:211-244. |
| [8] | Apolonski A,et al.Controlling the phase evolution of few-cycle light pulses[J].Phys.Rev.Left.,2000,85(4):740-743. |
| [9] | Jones D J,et al.Carrier-envelop phase control of femtosecond mode-locked lasers and direct optical frequency synthesis[J].Science,2000,288:635-639. |
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