为了实现远程气体探测，基于由超晶格材料构成的光参量振荡器，研制了一台双波长输出的中红外激光器。该光参量振荡器通过种子注入的方式，实现了纳秒级窄线宽的中红外脉冲激光输出，重复频率为500 Hz，单脉冲能量超过1 mJ，并能够对准2.6~4.0 μm波长范围内的NO、NO₂和SO₂的吸收峰。通过气体动态排放实验，在远程气体探测实验中对该激光器进行了验证。

In order to achieve the purpose of long-range gas detection, a mid-infrared laser with dual wavelength output is developed; this system is based on an optical parametric oscillator composed of superlattice materials. The optical parametric oscillator realizes a mid-infrared pulsed laser output of nanosecond order with a 500 Hz repetition rate and a single pulse energy that exceeds 1 mJ through seed injection, and effectively aligns the NO, NO₂, and SO₂ absorption peaks in the 2.6‒4.0 μm range. The laser performance is validated in a remote gas detection experiment based on a gas dynamic emission experiment.