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Title: Narrow-bandwidth tunable optical filter stabilized by Newton’s rings fringe analysis

Journal Article · · Applied Optics
DOI: https://doi.org/10.1364/AO.513725 · OSTI ID:2336602

The resolution of grating spectrometers is insufficient to resolve many features present in the emission spectra of solid-state quantum emitters. Spectral resolution may be improved by inserting a Fabry–Perot interferometer (FPI) whose length is tuned by a piezoelectric actuator. Yet piezo creep and thermal fluctuations cause instability that makes this solution unsuitable for measurement times longer than tens of seconds. To overcome this challenge, we employ active feedback derived from the Newton’s rings interference pattern formed by the reflection of a single-frequency laser from the FPI cavity. The resulting FPI transmission frequency is stable to within 50 MHz over several hours.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0016848
OSTI ID:
2336602
Journal Information:
Applied Optics, Journal Name: Applied Optics Journal Issue: 12 Vol. 63; ISSN 1559-128X; ISSN APOPAI
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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