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基于单波长外腔共振和频技术产生波长可调谐589nm激光及钠原子饱和荧光谱的测量*
기우단파장외강공진화빈기술산생파장가조해589nm격광급납원자포화형광보적측량*
The wavelength tunable 589 nm laser output based on singly resonant sum-frequency generation and the measurement of saturate fluorescence spectrum of sodium atom?

万方数据

物理学报物理學報 물이학보

2013年 9期 211-216 ,共6页

谭巍%付小芳%李志新%赵刚%闫晓娟%马维光*%董磊%张雷%尹王保%贾锁堂

담외%부소방%리지신%조강%염효연%마유광*%동뢰%장뢰%윤왕보%가쇄당

单波长外腔共振%和频%589 nm%钠原子饱和荧光谱單波長外腔共振%和頻%589 nm%鈉原子飽和熒光譜
단파장외강공진%화빈%589 nm%납원자포화형광보
single-wavelength extra-cavity resonance%sum-frequency%589 nm%sodium atom saturated fluorescence spectrum

本文基于新型单波长外腔共振和频技术实现了转换效率高、波长可调谐589 nm激光的输出,其中基频光波长分别为1583 nm和938 nm,和频晶体为周期极化铌酸锂.在1583 nm激光频率被锁定到外部环形腔腔模后,通过对938 nm激光的频率扫描实现了输出功率4.96 mW,调谐范围7 GHz的589 nm激光输出,并采用声光调制器的伺服反馈技术有效提高了输出功率的稳定性.最后采用该光源对钠原子在348-413 K (75-140?C)时D2线的饱和荧光谱进行了测量.观察到了多普勒背景下钠D2a, D2b以及Crossover的亚多普勒结构,其均可为589 nm频率的锁定提供参考信号.
본문기우신형단파장외강공진화빈기술실현료전환효솔고、파장가조해589 nm격광적수출,기중기빈광파장분별위1583 nm화938 nm,화빈정체위주기겁화니산리.재1583 nm격광빈솔피쇄정도외부배형강강모후,통과대938 nm격광적빈솔소묘실현료수출공솔4.96 mW,조해범위7 GHz적589 nm격광수출,병채용성광조제기적사복반궤기술유효제고료수출공솔적은정성.최후채용해광원대납원자재348-413 K (75-140?C)시D2선적포화형광보진행료측량.관찰도료다보륵배경하납D2a, D2b이급Crossover적아다보륵결구,기균가위589 nm빈솔적쇄정제공삼고신호.
A wavelength-tunable laser output at 589 nm with high conversion efficiency based on sum-frequency generation by using the technique of single-wavelength extra-cavity resonance is achieved. The two fundamental wavelengths are 1583 nm and 938 nm and the nonlinear crystal is the period-poled lithium niobate. After the frequency of 1583 nm laser was locked to the cavity mode and the frequency of 938 nm laser was scanned, a 589 nm laser output with power of 4.96 mW and wavelength tuning range of 7 GHz was obtained and the stability of the output power is improved effectively with the help of servo feedback loop technique of acousto-optic-modulator. Finally, based on this laser, the saturated fluorescence spectrum of sodium D2 line in the temperature range of 348—413 K (75—140 ?C) were measured. The Doppler-free structures of D2a, D2b and crossover lines on Doppler background were observed, which can provide reference signals for the frequency locking of 589nm laser.