IdealPhotonics' infrared autocorrelation meter is a measurement device based on nonlinear optical effects, specifically designed for the time-domain characteristic analysis of broadband infrared laser pulses (such as mid-infrared and terahertz bands). It indirectly measures pulse width, chirp characteristics, and phase information through autocorrelation technology.Based on nonlinear optical techniques (such as SHG/DFG), it achieves high-sensitivity time-domain measurement of broadband infrared/terahertz ultrashort pulses, possessing both pulse width and phase resolution capabilities.