System development of novel CW OPO for hyperspectral imaging and sensing

SYNOPOSIS将开发一种主动式长波中红外（LWIR）成像系统，能够满足包括爆炸物探测、石油和天然气勘探以及医疗诊断在内的广泛应用。到目前为止，主动成像系统主要工作在短波中红外光谱区域。将技术转移到更长的波长将使人们能够进入所谓的分子指纹区域，在那里与光和分子的相互作用明显更强，因此具有更高的灵敏度和特异性。到目前为止，LWIR主动成像技术的限制因素是实际LWIR光源的可用性。SYNOPOSIS将通过采用新型非线性材料（如定向图案砷化镓和二磷化锌锗），将连续波、腔内泵浦的光学参量振荡器推进到LWIR中来解决这一问题。

SYNOPOSIS will develop an active, long-wave mid-infrared (LWIR) imaging system capable of catering for a wide range of applications including the detection of explosives, oil and gas prospecting and medical diagnostics. To date, active imaging systems operate mostly in the short-wave mid-infrared spectral region. Moving the technology to longer wavelength will enable access to the so-called molecular fingerprint region where the interaction with light and molecules is significantly stronger, therefore enabling higher sensitivity and specificity. The limiting factor in the context of LWIR active imaging technology has so far been the availability of practical LWIR light sources. SYNOPOSIS will address this issue by advancing the continuous-wave, intracavity-pumped, optical parametric oscillator into the LWIR by employing novel nonlinear materials such as orientation-patterned gallium arsenide and zinc germanium diphosphide.