科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2013年
8期
1-3,6
,共4页
随机激光%不稳定性%GaAs随机激光器%时域有限差分法
隨機激光%不穩定性%GaAs隨機激光器%時域有限差分法
수궤격광%불은정성%GaAs수궤격광기%시역유한차분법
random lasers%instability in GaAs laser at random%the finite-difference time-domain method
为了进一步研究随机激光中谐振腔的物理特性，首先从随机激光腔物理角度分析了其具有的相干光与非相干光激发强度，然后建立了本文涉及谐振腔物理模型d2Pdt2+吟棕1 dPdt +棕21 P=资吟NEZ。其采用时域有限差分法得出吟x=吟y=10 nm时，其时间步长为吟t=吟x/（2c）抑1.67×1017 s，最后进行谐振腔的仿真特性分析得出：涉及GaAs随机激光器，在输入-输出曲线中出现两个斜坡，在第二个阈值处显现出高度的不稳定性，并且不稳定性并没有随着泵浦能量的进一步增加而消失。这一研究结果对于进一步了解随机激光的物理特性具有一定的意义。
為瞭進一步研究隨機激光中諧振腔的物理特性，首先從隨機激光腔物理角度分析瞭其具有的相榦光與非相榦光激髮彊度，然後建立瞭本文涉及諧振腔物理模型d2Pdt2+吟棕1 dPdt +棕21 P=資吟NEZ。其採用時域有限差分法得齣吟x=吟y=10 nm時，其時間步長為吟t=吟x/（2c）抑1.67×1017 s，最後進行諧振腔的倣真特性分析得齣：涉及GaAs隨機激光器，在輸入-輸齣麯線中齣現兩箇斜坡，在第二箇閾值處顯現齣高度的不穩定性，併且不穩定性併沒有隨著泵浦能量的進一步增加而消失。這一研究結果對于進一步瞭解隨機激光的物理特性具有一定的意義。
위료진일보연구수궤격광중해진강적물리특성，수선종수궤격광강물리각도분석료기구유적상간광여비상간광격발강도，연후건립료본문섭급해진강물리모형d2Pdt2+음종1 dPdt +종21 P=자음NEZ。기채용시역유한차분법득출음x=음y=10 nm시，기시간보장위음t=음x/（2c）억1.67×1017 s，최후진행해진강적방진특성분석득출：섭급GaAs수궤격광기，재수입-수출곡선중출현량개사파，재제이개역치처현현출고도적불은정성，병차불은정성병몰유수착빙포능량적진일보증가이소실。저일연구결과대우진일보료해수궤격광적물리특성구유일정적의의。
To further research random laser in the resonance cavity of physical characteristics, text in the first random laser cavity physical angle analysis has its has of coherent light and non-coherent light fired strength, then established has this article involved resonance cavity physical model its used Shi domain limited difference law concluded that Shi its time step for, finally for has resonance cavity of simulation characteristics analysis concluded that: involved GaAs random laser, in entered-output curve in the appears two a slopes, In the second threshold value showed a high degree of instability, and instability did not disappear as the pump further increases the energy of, results of this study for further information on physical properties of random laser has a certain significance.
