【摘要】：基于摻氧化鎂的周期性極化鈮酸鋰(MgO:PPLN)晶體,研究了連續(xù)波種子光注入結(jié)構(gòu)的光參量放大器(OPA)。采用重復(fù)頻率為10kHz、最大平均輸出功率為6 W的1064nm高頻脈沖激光作為抽運(yùn)源,晶體的極化周期為31.02μm,在119℃工作溫度下,將連續(xù)分布式反饋激光器(DFB)作為種子注入,在1652.3nm處得到最大平均功率為125mW的OPA信號(hào)光輸出,量子轉(zhuǎn)換效率為7.47%。實(shí)驗(yàn)通過(guò)改變注入種子光波長(zhǎng),實(shí)現(xiàn)了信號(hào)光nm級(jí)范圍的調(diào)諧輸出。信號(hào)光通過(guò)10m外甲烷氣池,觀察到其光譜強(qiáng)度明顯下降,初步驗(yàn)證了信號(hào)光在甲烷遙測(cè)領(lǐng)域的可行性。與用種子光直接檢測(cè)相比,信號(hào)光強(qiáng)度更高,檢測(cè)距離及靈敏度均有較大優(yōu)勢(shì)。
[Abstract]:Based on magnesia doped periodically poled lithium niobate (MgO:PPLN) crystal, a CW seeded optical parametric amplifier (OPA).) with continuous wave seeding structure has been studied. A 1064nm high frequency pulse laser with a repetition rate of 10 kHz and a maximum average output power of 6 W was used as the pumping source. The polarization period of the crystal was 31.02 渭 m. The continuous distributed feedback laser (DFB) was injected as the seed at 119 鈩，

本文編號(hào)：2382421