At first , we introduced the velocity equation of dpssl , which operates in the multi - longitudinal modes . then , we give the dynamic equation of intracavity doubled - frequency dpssl , when we take in the shg ( second harmonious wave generation ) equation 本文首先介紹了固體激光器多模運(yùn)轉(zhuǎn)的速率方程,結(jié)合二次諧波的產(chǎn)生方程,給出了內(nèi)腔倍頻固體激光器的動(dòng)態(tài)方程。
The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations . the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light . using the polarization function of lbo , a quartz full - wave plate was introduced into the cavity , a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed 將腔內(nèi)多縱模倍頻速率方程推廣應(yīng)用到準(zhǔn)三能級(jí)藍(lán)光激光器中,分析了一個(gè)縱模、兩個(gè)縱模、多個(gè)縱模時(shí)的噪聲情況,合理地解釋了實(shí)驗(yàn)中激光器單縱模運(yùn)轉(zhuǎn)以及長(zhǎng)腔多縱模運(yùn)轉(zhuǎn)時(shí)穩(wěn)定輸出的實(shí)驗(yàn)現(xiàn)象,同時(shí)利用該速率方程分析了以各向同性激光晶體nd : yag為工作物質(zhì),類臨界相位匹配lbo為倍頻晶體的藍(lán)光激光器中基頻光偏振特性,合理利用類臨界相位匹配lbo倍頻晶體的偏振特性與引入的石英晶體全波片構(gòu)成雙折射濾光片,通過(guò)選單頻來(lái)抑制噪聲,獲得了藍(lán)光低噪聲的穩(wěn)定輸出。
The compensator compensates the change of polarized light , and also controls the polarized orientation . in result , we get a cavity , with the orientations of the linear polarized multi - longitudinal modes are agree . the noise of green output reducing , the cavity is steady with multi - longitudinal modes operating 本文首次將nd : yvo _ 4晶體應(yīng)用于抑制激光噪聲的補(bǔ)償片法中,利用nd : yvo _ 4晶體的線偏振特性,控制諧振腔內(nèi)激光束的偏振方向,使多縱模均為線偏振,且偏振方向一致,從而減少了綠光輸出中的波動(dòng)現(xiàn)象。