Abstract
Near-infrared wavelength observations are crucial for understanding numerous fields of astrophysics, such as supernova cosmology and positronium annihilation detection.However, current ground-based observations suffer from an enormous background due to OH emission in the upper atmosphere. One promising way to solve this problem is to use ring-resonator filters to suppress OH emission lines. In this work, we discuss our optimization of ring-resonator filter performance from five perspectives: Resonance wavelength matching, polarizationindependent operation, low insertion loss, low-loss coupling to astronomical instruments, and broadband operation. In the end, we discuss next steps needed for reliable supernova and positronium observations, thus providing a roadmap for future advances in near-infrared astronomy.
Original language | English |
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Pages (from-to) | 3865-3873 |
Number of pages | 9 |
Journal | Applied Optics |
Volume | 60 |
Issue number | 13 |
DOIs | |
Publication status | Published - 1 May 2021 |