Zero-spindle spectral drill: real-time spectral measurement in a fixed Fabry-Pérot cavity.
Opt Express
; 28(15): 22088-22094, 2020 Jul 20.
Article
em En
| MEDLINE
| ID: mdl-32752476
ABSTRACT
An optical configuration for Fabry-Pérot cavity scanning using a geometric phase shifter, known as the "spectral drill," is improved to acquire a spectrum in real-time. Previously, the resonance condition of the spectral drill is swept by the mechanical rotation of a phase plate comprising a geometric phase shifter, and the acquisition time is limited. In this work, using a q-plate and a camera instead of phase plate rotation and a photo detector, we remove all the spinning mechanics and increase the acquisition rate by a factor 720. This technique will be applied to locking laser frequency.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article