CELINE : CELestial Infrared Nulling
Experiment
Charles Hanot, Pierre Riaud, Serge Habraken, Jean Surdej
ARC meeting, 11February 2010
Introduction
Last Year This year
Fibered laser diode 1.55 µm and 2.3 µm SMF-28e Masks + fiber launcher
Aluminum coated parabola Aluminum coated parabola Achromatic Phase Shifter
Achromatic Phase Shifter
Monopixel detector SMF-28e Fiber launchers 152.4 mm 609.6 mm 152.4 mm 609.6 mm Wedged plates Wedged plates CaF2 Lens Masks + fiber launcher
ANE : AEOS - Hololab
Nulling Experiment CELINE
Introduction
•
Direct imaging of exo-Earths:•
Huge contrast ratio:➡
2x107 (10µm) & 1010 (visible)>109 >106
Introduction
Introduction
Adaptative Nuller Testbed (JPL)
Introduction
Introduction
Achromatic Nulling Testbed (JPL)
Introduction
Planet Detection Testbed (JPL)
Introduction
SYNAPSE (IAS)
Introduction
Fiber Nuller
Our Goals
•
Simple fully symmetric scheme•
Reflective•
Broadband nulling (H & K bands)•
Test Achromatic phase shifters•
Test new single-mode fibersPrinciples
Objectives
! Fibered laser diode
1.55 µm and 2.3 µm SMF-28e Masks + fiber launcher
Aluminum coated parabola Aluminum coated parabola Achromatic Phase Shifter
Achromatic Phase Shifter
Monopixel detector SMF-28e Fiber launchers 152.4 mm 609.6 mm 152.4 mm 609.6 mm Wedged plates Wedged plates CaF2 Lens Masks + fiber launcher
Status
•
Experiment running and properly aligned•
Monochromatic laser•
«Delay lines» working•
Need to mount APSFirst results 80 100 120 140 160 180 200 220 240 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Time [s] Null depth 5 10!4 Background Maxing Nulling jeudi 11 février 2010
First results
First results 10!1 100 101 102 10!7 10!6 10!5 10!4 10!3 10!2 Frequency [Hz] Density jeudi 11 février 2010
Conclusions
•
Development of an achromatic nulling testbed•
Instrument easy to use•
Instrument ready to use•
First results are promisingThank you !!!
Questions??