Abstract
Despite recent advances in high-contrast imaging techniques, high resolution spectroscopy for characterization of exoplanet atmospheres is still limited by our ability to suppress residual starlight speckles at the planet's location. We have demonstrated a new concept for speckle nulling by injecting directly imaged planet light into a single-mode fiber, linking a high-contrast adaptively-corrected coronagraph to a high-resolution spectrograph (diffraction-limited or not). The restrictions on the incident electric field that will couple into the single-mode fiber give the adaptive optics system additional degrees of freedom to suppress the speckle noise on top of destructive interference. We are able to achieve a starlight suppression gains that are an order of magnitude better than conventional techniques in broadband light with minimal planet throughput losses.
Original language | English (US) |
---|---|
Title of host publication | Techniques and Instrumentation for Detection of Exoplanets VIII |
Editors | Stuart Shaklan |
Publisher | SPIE |
ISBN (Electronic) | 9781510612570 |
DOIs | |
State | Published - 2017 |
Event | Techniques and Instrumentation for Detection of Exoplanets VIII 2017 - San Diego, United States Duration: Aug 8 2017 → Aug 10 2017 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
---|---|
Volume | 10400 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Techniques and Instrumentation for Detection of Exoplanets VIII 2017 |
---|---|
Country/Territory | United States |
City | San Diego |
Period | 8/8/17 → 8/10/17 |
Funding
The authors would like to acknowledge the financial support of the Heising-Simons foundation.
Keywords
- broadband
- exoplanet char-acterization
- fiber injection unit
- instrumentation
- speckle nulling
- spectrograph
- vortex coronagraph
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering