Spencer D J, Denault G C, Takimoto H H
Appl Opt. 1974 Dec 1;13(12):2855-68. doi: 10.1364/AO.13.002855.
The absorption of twenty-four DF laser wavelengths ranging from 3.6128 microm P(1)(6) to 4.0464 microm P(3)(11) was measured for CH(4) , N(2)O, CO(2), and HDO vapor. Total absorption was calculated for the lines for each of these absorbing gases and for the N(2) and H(2)O continua independently and collectively for two representative transmission paths (midlatitude summer model); i.e., a vertical path from sea level to the edge of the atmosphere containing 2.93 cm precipitable water and a horizontal 8.0-km path at sea level at 14.2-Torr water vapor partial pressure (11.2 cm precipitable water). Transmission was >90% for twelve lines in the vertical path and >65% for thirteen lines in the horizontal path. A comparison of the measured absorption coefficients was made with calculated values of McClatchey and Selby for seventeen lines. Good agreement was obtained with most lines, the worst within a factor ~2 of predicted values.
测量了24种DF激光波长（范围从3.6128微米P(1)(6)到4.0464微米P(3)(11)）在CH(4)、N(2)O、CO(2)和HDO蒸汽中的吸收情况。分别独立计算了这些吸收气体中各谱线以及N(2)和H(2)O连续谱在两条代表性传输路径（中纬度夏季模型）中的总吸收，即从海平面到包含2.93厘米可降水的大气边缘的垂直路径，以及海平面处水汽分压为14.2托（11.2厘米可降水）时8.0千米的水平路径。垂直路径中有12条谱线的传输率>90%，水平路径中有13条谱线的传输率>65%。将测量的吸收系数与麦克拉奇和塞尔比针对17条谱线计算的值进行了比较。大多数谱线的结果吻合良好，最差的结果在预测值的约2倍范围内。
