Polarization sensitive ultrafast mid-IR pump probe micro-spectrometer with diffraction limited spatial resolution

• DOI: 10.1364/oe.21.008357
• Publication Date: 2013-03-29T22:27:43Z
• Authors: M. Kaucikas; J. Barber; J. J. Van Thor
• Keywords: Imaging spectrometer; Temporal resolution

A setup of ultrafast transient infrared IR spectrometer is described in this paper that employed Schwarzschild objectives to focus the probe beam a diffraction limited spot. Thus measurements were performed with very high spatial resolution mid-IR spectral region. Furthermore, modulating polarization light enabled detecting dichroism sample. These capabilities applied study absorption Photosystem II core complex and image an organized film methylene blue chloride dye. Moreover, noise sources pump measurement presented. The predicted level current was 8.25 μOD 10(4) acquisitions compared well experimental observation 9.6 μOD.