Antipov A B, Zuev V E, Lopasov V P, Ponomarev Y N
Appl Opt. 1979 Sep 1;18(17):3014-7. doi: 10.1364/AO.18.003014.
The dependence of the spectral coefficient of atmospheric water vapor absorption on ruby-laser radiation intensity has been studied experimentally. Measurements were made using an optoacoustic laser spectrometer with a sensitivity of 10(-9) cm(-1) J(-1). The contours of the H(2)O absorption lines at 694.215 nm, 694.238 nm, and 694.38 nm were measured at two different values of radiation intensity within 5-100 MW/cm(2). The values of the saturation parameter were calculated using the observed decrease of absorption in the line maximum; they were 210 +/- 23 MW/cm(2), 140 +/- 15 MW/cm(2), and 180 +/- 20 MW/cm(2) for the 694.215-nm, 694.238-nm, and 694.38-nm, lines, respectively. The values of the absorption parameter are in satisfactory agreement with the calculated results. The dependence of the saturation parameter on pressures between 250-750 Torr was investigated for the isolated 694.38-nm absorption line.
对大气水汽吸收光谱系数与红宝石激光辐射强度的依赖关系进行了实验研究。使用灵敏度为10(-9) cm(-1) J(-1)的光声激光光谱仪进行测量。在5 - 100 MW/cm(2)范围内的两种不同辐射强度值下，测量了694.215 nm、694.238 nm和694.38 nm处H(2)O吸收线的轮廓。利用在线最大值处观察到的吸收下降来计算饱和参数值；对于694.215 nm、694.238 nm和694.38 nm的谱线，其值分别为210 +/- 23 MW/cm(2)、140 +/- 15 MW/cm(2)和180 +/- 20 MW/cm(2)。吸收参数值与计算结果吻合良好。针对孤立的694.38 nm吸收谱线，研究了饱和参数在250 - 750 Torr压力之间的依赖关系。
