CAJ | 학술논문

当采用低功率的宏-微脉冲激光激发钠信标时，尽管激光传输和钠信标光斑大小受到大气湍流影响，但是钠信标具有回波光子数无起伏且激发品质因数高的优点。除此之外，宏-微脉冲激光激发钠信标还与激光的宏脉冲线型有关。对于高斯线型的宏脉冲，增大微脉冲的宽度有利于提高激发钠信标的品质因数和激发态概率。为了获得更多的钠信标回波光子和较小的钠信标半径，增大激光功率的同时要考虑良好的光束质量、适当的激光发射口径以及光谱宽度等影响因素。因此，优选宏-微脉冲激光的参数、发射口径、发射方式等对于激发优良特性的钠信标有着重要的现实意义。
당채용저공솔적굉-미맥충격광격발납신표시，진관격광전수화납신표광반대소수도대기단류영향，단시납신표구유회파광자수무기복차격발품질인수고적우점。제차지외，굉-미맥충격광격발납신표환여격광적굉맥충선형유관。대우고사선형적굉맥충，증대미맥충적관도유리우제고격발납신표적품질인수화격발태개솔。위료획득경다적납신표회파광자화교소적납신표반경，증대격광공솔적동시요고필량호적광속질량、괄당적격광발사구경이급광보관도등영향인소。인차，우선굉-미맥충격광적삼수、발사구경、발사방식등대우격발우량특성적납신표유착중요적현실의의。
Sodium laser beacon (SLB) excited by a macro-micro pulse laser with low power has the following advantages: the return photons without fluctuations and the high merit quantity, although the laser beam propagation and the size of SLB suffer form the atmospheric turbulence. In addition, the macro-pulse profile may influence the interaction of laser and sodium atoms. For the macro-pulse with a Gaussian profile, it is useful to enhance the merit quantity and the excitation probability of the SLB to increase the width of micropulse. In order to obtain more of the return photons in the SLB, while increasing the laser power, the fine beam quality, the appropriate launch diameter, and the spectral width of the laser etc. must be considered. Therefore, it is of practical significance for the SLB with fine characteristics to optimize the laser parameters, the launch diameter and launch pattern.