Simultaneous multipolarization and high-resolution oxygen A-band spectrometer optical design with the astigmatism-corrected method

Simultaneous multipolarization and high-resolution oxygen A-band spectrometer (SPHABS) is proposed. The astigmatism correction theory is used to separate beams from different fields of view and make it possible to obtain multiple polarization information simultaneously. SPHABS' design and the basic principle of SPHABS and the astigmatism correction theory are elaborated in detail. The ray-tracing results of the model showed that the resolution reached 0.016 nm and information from four fields of view could be obtained simultaneously on the image surface. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement