Dispersive mirror characterization and application for mid-infrared post-compression

Abstract This paper presents a second harmonic assisted spectrally resolved interferometric technique that can overcome the limited spectral resolution of commercially available spectrometers in mid-infrared. The discussed scheme was validated by measuring group delay several well-known and frequently used materials. Our main motivation to characterize phase shift newly designed manufactured dispersive mirrors be for mid-infrared (MIR) post-compression. These were successfully implemented post-compression stage our MIR laser system, where pulse duration shortened below two optical cycles peak power increased 30.3% compared original output.