Add to ORKGThe Annular Groove Phase Mask (AGPM) is a circularly symmetric half wave plate consisting of a circular high aspect ratio sub-wavelength grating. Here we present a method for realizing such structures in diamond. To improve the AGPM performance, antireflective sub-wavelength gratings are etched on the backside of the components, and such gratings are also discussed. Components for the N-band (around 10 μm) and the L-band (around 3.8 μm) have been successfully fabricated. We are currently developing the process further to improve the precision of the gratings and produce an AGPM for the K-band (around 2.2 μm)
In this paper, we present an elegant solution for creating robust monolithic achromatic half-wave pl...
The Annular Groove Phase Mask coronagraph (AGPM) is an intrinsically achromatic vectorial vortex. It...
Context. Coronagraphy is a powerful technique to achieve high contrast imaging and hence to image fa...
The Annular Groove Phase Mask (AGPM) is a circularly symmetric half wave plate consisting of a circu...
The Annular Groove Phase Mask (AGPM) is a circularly symmetric half wave plate consisting of a circu...
Phase-mask coronagraphs are known to provide high contrast imaging capabilities while preserving a s...
Phase-mask coronagraphs are known to provide high contrast imaging capabilities while preserving a s...
Context. The annular groove phase mask (AGPM) is one possible implementation of the vector vortex co...
Context. The annular groove phase mask (AGPM) is one possible implementation of the vector vortex co...
peer reviewedIn this paper, we address two challenges of subwavelength grating manufacturing: the ne...
The AGPM (Annular Groove Phase Mask, Mawet et al. 2005) is an optical vectorial vortex coronagraph (...
In recent years, phase mask coronagraphy has become increasingly efficient in imaging the close envi...
peer reviewedVortex phase masks have been shown to be an efficient means to reduce the blinding stel...
Diamond is an excellent material for infrared optics and for applications in harsh environments. Som...
Vortex phase masks have been shown to be an efficient means to reduce the blinding stellar light in ...
In this paper, we present an elegant solution for creating robust monolithic achromatic half-wave pl...
The Annular Groove Phase Mask coronagraph (AGPM) is an intrinsically achromatic vectorial vortex. It...
Context. Coronagraphy is a powerful technique to achieve high contrast imaging and hence to image fa...
The Annular Groove Phase Mask (AGPM) is a circularly symmetric half wave plate consisting of a circu...
The Annular Groove Phase Mask (AGPM) is a circularly symmetric half wave plate consisting of a circu...
Phase-mask coronagraphs are known to provide high contrast imaging capabilities while preserving a s...
Phase-mask coronagraphs are known to provide high contrast imaging capabilities while preserving a s...
Context. The annular groove phase mask (AGPM) is one possible implementation of the vector vortex co...
Context. The annular groove phase mask (AGPM) is one possible implementation of the vector vortex co...
peer reviewedIn this paper, we address two challenges of subwavelength grating manufacturing: the ne...
The AGPM (Annular Groove Phase Mask, Mawet et al. 2005) is an optical vectorial vortex coronagraph (...
In recent years, phase mask coronagraphy has become increasingly efficient in imaging the close envi...
peer reviewedVortex phase masks have been shown to be an efficient means to reduce the blinding stel...
Diamond is an excellent material for infrared optics and for applications in harsh environments. Som...
Vortex phase masks have been shown to be an efficient means to reduce the blinding stellar light in ...
In this paper, we present an elegant solution for creating robust monolithic achromatic half-wave pl...
The Annular Groove Phase Mask coronagraph (AGPM) is an intrinsically achromatic vectorial vortex. It...
Context. Coronagraphy is a powerful technique to achieve high contrast imaging and hence to image fa...