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Omni‐Resonant Imaging Across the Visible

Journal Article · · Laser & Photonics Reviews
 [1];  [2];  [2]
  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Central Florida, Orlando, FL (United States). College of Optics and Photonics, Center for Research and Education in Optics and Lasers (CREOL)
  2. Univ. of Central Florida, Orlando, FL (United States). College of Optics and Photonics, Center for Research and Education in Optics and Lasers (CREOL)
Resonant field enhancement in optical cavities is provided over only narrow linewidths and for specific spatial modes. Consequently, spectrally restrictive planar Fabry-Pérot cavities have not contributed to date to white-light imaging, which necessitates a highly multimoded broadband field to satisfy the resonance condition. It is shown that introducing judicious angular-dispersion circumvents the fundamental trade-off between cavity linewidth and finesse in a Fabry-Pérot cavity by exciting a 130-nm-bandwidth achromatic resonance across the visible spectrum, which far exceeds the finesse-limited linewidth (0.5 nm), and even exceeds the free spectral range (45 nm). This omni-resonant configuration enables broadband color-imaging over a 100-nm-bandwidth in the visible with minimal spherical and chromatic aberrations. Omni-resonant imaging is demonstrated using coherent and incoherent light, and spatially extended and localized fields comprising stationary and moving objects. This work paves the way to harnessing broadband resonant enhancements for spatially structured fields, as needed for example in solar windows.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
US Office of Naval Research (ONR); USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2568860
Report Number(s):
LA-UR--25-24749; 10.1002/lpor.202500270; 1863-8899
Journal Information:
Laser & Photonics Reviews, Journal Name: Laser & Photonics Reviews; ISSN 1863-8880; ISSN 1863-8899
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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