The mid-infrared (MIR: 2 – 15 μm) spectral range has numerous applications in fundamental molecular spectroscopy to industrial testing, semiconductor processing and defense application. The detection of a MIR signal in the ambient atmosphere is especially challenging due to the high thermal noise. In this webinar hosted by the Optics in Digital Systems Technical Group and the Nonlinear Optics Technical Group, Ajanta Barh will introduce a novel approach to efficient detection of MIR signals using standard near-infrared (NIR) silicon detectors.
The technique is called nonlinear parametric frequency upconversion. In this approach, instead of directly detecting in the MIR, the MIR signal is first parametrically transferred to the higher frequency visible-NIR spectral range using a second-order nonlinear interaction, which essentially preserves the spatial, spectral, and temporal information of the signal of interest. Dr. Barh will discuss its basic operational principles, different technical parameters (e.g. efficiency, noise performance, resolution etc.), suitability in multi-dimensional sensing, integration with linear imaging to perform MIR imaging, competing techniques, and some recent applications.
What You Will Learn:
• An application of second-order optical nonlinearity
• Current technological advances and applications of upconversion as well as related outstanding issues
Who Should Attend:
• Master students
• Ph.D. students
•Postdocs and early career researchers