The absorption spectra of vapors of concentrated hydrogen peroxide / water mixtures (without a carrier gas) were characterized at wavelengths from 1390 to 1470 nm utilizing a near-infrared diode laser. Low pressures were employed to examine these spectral features near the Doppler-broadened limit. An advantageous portion of the spectra near 1420 nm containing several distinct H₂O₂ peaks and one well-known H₂O peak (for calibration) was identified and the cross-sections of these peaks determined. These cross section values can be employed to measure vapor-phase concentrations of H₂O₂ in propulsion, atmospheric chemistry, and sterilization applications.

使用近红外二极管激光器在1390至1470 nm的波长处表征了浓过氧化氢/水混合物（无载气）的蒸气的吸收光谱。低压被用来检查这些频谱特征在多普勒展宽的极限附近。在1420nm附近的光谱的有利部分被确定，该光谱包含几个不同的H ₂ O ₂峰和一个众所周知的H ₂ O峰（用于校准），并确定这些峰的横截面。这些横截面值可用于测量推进，大气化学和灭菌应用中H ₂ O ₂的气相浓度。