1.315μm波长附近高分辨率实际大气吸收光谱测量探究.pdfVIP

第29卷 增刊 中 国 激 光 Vot.A29,Suppl 2002年6月 CHINESEJOURNALOFLASERS June,2002 文章编号:0258-7025(2002)Supplement-0289-04 1.315Eim波长附近高分辨率实际大气吸收光谱 测量研究 ‘ 魏合理 乌)承就 龚知本 心中国科学院安徽光学精密机械研究所国家863汁划大气光学重点实验室，合肥230031) 提要 用窄线宽、脉冲可调谐光参量振荡器(010)作光源，使用光程长达1097。的怀特池，采用单探测器分时复 用的探侧方法，首次在吸收池中精确测量了实际大气中1.315fun波长附近高分辨率吸收光谱，实验验证了实际大 气中水气是该波段的主要吸收气体;得到了实际大气中吸收分子在氧碘激光波长(7603.14二 ’)处的吸收截面为 (t.05士0.09)x10-acm标〔准大气条件下)以及在该波段主要吸收谱线的参数。并计算了在氧碘激光波长附近 大气分子的吸收截面。 关键词 高分辨率光谱，大气吸收，OPO，怀特池 中图分类号 TN012 文献标识码 A MeasurementofHigh-resolutionAbsorptionSpectra ofRealAtmosphereat1.315pm WEIHe-h WUCheng-jitt GONGZhi-ben (KeyLaboratoryf)rAtmosphericOpticsofNationalHighTrhnolcgyResearchandD-lop- tPlan AnhuitmtituteofOpticsandFineA1echanfca,theChineseAcademyofSciences,Hefei230031) AbstractThehig}rrcolutionabsorptionspectraofrealatmospherenearthe1一315funwavelengthwererecorded accuratelyusinganexperimentalsystem.Thesystemincludesatunablenarrow-line-widthpulsedOPOlaser,amultipass absorptinocelloftheWhite-typewithtotalopticallengthaslonga1097m,andasingletime-divisionmultiplexingfast- responsedetectorsystem.Itisverifiedfromthespectrethatwatervaporisthemainabsorptiongasinthewavelength hand.Theabstrptioncry sectionofatmosphericabosrptionmoleculeatthewavelengthofiodinelaser(7603.14二 ’) wasgottenfromthemeasurementdatawhichis(1.05士0.09)x10一，耐‘(atthestandardatmosphericocndition)八nd theparametersofatmosphericabsorptionlineswerealsoobtainedaroundthewavelengthof1.315funfracnthemeasured spectra.Theabsorptionc~ 一sectionsofatmosphericabsorptionmoleculenearthewavelengthofiodinelaserwerealso cal`以atedfromthemeasurementparameters Keywordshigh-resolutionspectroscopy,atmosphericab