We have measured ammonia line intensities using direct tunable diode laser absorption spectroscopy (dTDLAS) in the 1.5 µm region, and provide new or improved line intensities for 19 absorption lines between 6547 and 6552 cm^-1. Our experimental setup was carefully designed to minimize bias and error. Our measured line intensities have at least comparable, or considerably lower uncertainties, and reveal significant differences (up to 40%) compared to literature data. Furthermore, we provide an in-depth quantification and discussion of key sources of uncertainty complying with the guide to the expression of uncertainty in measurement (GUM). Independent NH₃ trace amount fraction measurements indicate that our line intensities for the three strongest lines (6548.61, 6548.80 and 6548.92 cm^-1) are more accurate than the data listed in the HITRAN database, while our uncertainties are also considerably lower (1, 1 and 3%).

我们使用直接可调谐二极管激光吸收光谱 (dTDLAS) 在 1.5 µm 区域测量了氨线强度，并为 6547 和 6552 cm ^-1之间的 19 条吸收线提供了新的或改进的线强度。我们的实验设置经过精心设计，以最大限度地减少偏差和错误。我们测量的线强度至少具有可比性或相当低的不确定性，并且与文献数据相比显示出显着差异（高达 40%）。此外，我们根据测量不确定度表达指南 (GUM) 对不确定度的关键来源进行了深入量化和讨论。独立的 NH ₃痕量分数测量表明我们的三个最强谱线（6548.61、6548.80 和 6548.92 cm^-1 ) 比 HITRAN 数据库中列出的数据更准确，而我们的不确定性也相当低（1%、1% 和 3%）。