Spectral imaging at high-definition and high speed in the mid-infrared

TL;DR

This paper introduces a novel high-speed, high-definition spectral imaging technique in the mid-infrared range using non-degenerate two-photon absorption, enabling real-time chemical and morphological analysis without complex processing.

Contribution

The paper presents a new MIR spectral imaging method that achieves rapid, high-resolution imaging over broad spectral ranges without requiring image reconstruction.

Findings

Achieves high-definition MIR spectral images in under a second

Enables real-time chemical and morphological analysis

Simplifies imaging process by avoiding complex reconstruction

Abstract

Spectral imaging in the mid-infrared (MIR) range provides simultaneous morphological and chemical information of a wide variety of samples. However, current MIR technologies struggle to produce high-definition images over a broad spectral range at acquisition rates that are compatible with real-time processes. We present a novel spectral imaging technique based on non-degenerate two-photon absorption of temporally chirped optical MIR pulses. This new approach avoids complex image processing or reconstruction and enables high-speed acquisition of spectral data cubes [xyw] at high pixel density in under a second.