本文關(guān)鍵詞： 大氣光學(xué) 激光雷達(dá) 高光譜分辨率 多縱模激光器 大氣氣溶膠探測(cè)　出處：《光學(xué)學(xué)報(bào)》2017年04期 　論文類型：期刊論文

【摘要】：提出了一種新型的采用多縱模激光器作為發(fā)射光源的大氣氣溶膠遙感高光譜分辨率激光雷達(dá)(HSRL)技術(shù)。該技術(shù)將視場(chǎng)展寬邁克耳孫干涉儀(FWMI)作為光譜鑒頻器,并在設(shè)計(jì)FWMI時(shí)使其周期鑒頻特性與多縱模激光器的模式間隔相匹配,因而每個(gè)縱模的回波信號(hào)可被FWMI鑒頻器進(jìn)行效果一致的精細(xì)光譜分離。詳細(xì)闡明了所提出的多縱模HSRL的原理和實(shí)現(xiàn)方式,定量討論了制約多縱模HSRL中FWMI鑒頻性能的主要因素。在1064nm波段采用計(jì)算機(jī)仿真驗(yàn)證了所提技術(shù)的性能。多縱模HSRL技術(shù)可避免目前HSRL對(duì)單縱模激光器的依賴,既能減小HSRL中激光器的成本、體積和重量,又可以大幅提升了HSRL激光系統(tǒng)的穩(wěn)定性,對(duì)我國(guó)機(jī)載和星載HSRL的研制具有一定的借鑒意義。
[Abstract]:A novel atmospheric aerosol remote sensing hyperspectral resolution lidar (HSRL) technique using multi-longitudinal-mode lasers as the emitting source is proposed, in which the extended field of view (FWMI) is used as the spectral frequency discriminator. In the design of FWMI, the characteristic of periodic frequency discrimination is matched with the mode interval of multi-longitudinal-mode laser. Therefore, the echo signal of each longitudinal mode can be separated by the FWMI discriminator with the same effect of fine spectrum. The principle and implementation of the proposed multi-longitudinal mode HSRL are described in detail. The main factors that restrict the performance of FWMI frequency discrimination in multi-longitudinal mode HSRL are discussed quantitatively. The performance of the proposed technique is verified by computer simulation at 1064nm. Multi-longitudinal-mode HSRL technology can avoid the dependence of HSRL on single-longitudinal-mode lasers. It can not only reduce the cost, volume and weight of laser in HSRL, but also greatly improve the stability of HSRL laser system. It can be used for reference in the development of airborne and spaceborne HSRL in China.
【作者單位】： 浙江大學(xué)光電科學(xué)與工程學(xué)院現(xiàn)代光學(xué)儀器國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC0200704) 國(guó)家自然科學(xué)基金(41305014,61475141) 浙江省公益技術(shù)研究項(xiàng)目(2016C33004) 現(xiàn)代光學(xué)儀器國(guó)家重點(diǎn)實(shí)驗(yàn)室創(chuàng)新基金(MOI2015QN01)
【分類號(hào)】：TN958.98

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