Astrophotonics: astronomy and modern optics

Minardi, Stefano; Harris, Robert J.; Labadie, Lucas

doi:10.1007/s00159-021-00134-7

Cited by 16 publications

(3 citation statements)

References 350 publications

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“…The formalism and the basic principles of such systems are given in Chapter 28, which equally describe a range of applications. Such dispositive that integrate collection design via for example large aperture multimodal guides, modal transformations to single mode transport [142] can be applied for sensing and imaging celestial objects and their spectral signature in astronomy and astrophysics with a compact and robust astrophotonics design [143,144,145]. Their respond thus to a requirement of manipulating collection and processing weak optical signals coming from remote objects in space.…”

Section: Optical Field Read-out In Spectro-imagers; Potential For Ast...mentioning

confidence: 99%

Ultrafast Laser Volume Nanostructuring of Transparent Materials: From Nanophotonics to Nanomechanics

Stoian

D’Amico²,

Bellouard³

et al. 2023

Springer Series in Optical Sciences

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The capability of ultrashort laser pulses to generate nonlinear absorption in the transparency window of dielectric materials is at the base of volume structuring. The result is a local change of the refractive index, the building block for generating complex embedded optical functions in three-dimensional geometries within a monolith chip. The nonlinearity determines spatial scales on the order of the wavelength. Depending on the rate and the amount of energy deposition, the local refractive index change can be accurately tuned from positive to negative values on variable scales, generating thus new capabilities for processing light within an optical chip in terms of embedded waveguides and micro-optics. New irradiation strategies and engineered glasses permit to go even further in reaching processing super-resolution, i.e. on spatial scales smaller than the optical resolution. The smallest scales achievable nowadays go well bellow the diffraction limit approaching and even surpassing the 100 nm value, a tenth of the wavelength. We will discuss in this chapter the possibility of obtaining structural features much smaller than the electromagnetic wavelength and the associated methods. Direct focusing and self-organization phenomena will be analyzed, as well as the optical functions originating from these processes, namely in transporting and manipulating light. Achieving extreme scales in the range of 100 nm generates an additional capability Razvan Stoian

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Section: Optical Field Read-out In Spectro-imagers; Potential For Ast...mentioning

confidence: 99%

Ultrafast Laser Volume Nanostructuring of Transparent Materials: From Nanophotonics to Nanomechanics

Stoian

D’Amico²,

Bellouard³

et al. 2023

Springer Series in Optical Sciences

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“…Hence, as an emerging academic field, astrophotonics goes beyond the simple exploitation of the existing photonics market, but rather invents new concepts and proposes new ideas serving astronomical needs and rarely emerging from the conventional photonic community. The relevance of astrophotonics for the astronomical community as large and its recognition as an academic field is probably best illustrated with the first recently invited review of the field in the Astronomy & Astrophysics Review 4 .…”

Section: A Growing and Active Communitymentioning

confidence: 99%

A report on the status of astrophotonics for optical/IR interferometry and beyond

Labadie

2022

Optical and Infrared Interferometry and Imaging VIII

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Long-baseline interferometry and high-resolution spectroscopy are two examples of areas that have benefited from astrophotonics devices, but the application range is expanding to other subareas and other wavelength ranges.The VLTI has been one of the pioneering astronomical infrastructure to exploit the potential of astrophotonics instrumentation for high-angular resolution interferometric observations, whereas new opportunities will arise in the context of the future ELTs. In this contribution, I review the current state of the art regarding the interplay between photonic-based solutions and astronomical instrumentation and highlight the growth of the field, as well as its recognition in recent strategy surveys such as the Decadal. I will explain the benefits of different technological platforms making use of photolithography or laser-writing techniques. I will review the most recent results in the field covering simulations, laboratory characterization and on-sky prototyping. Astrophotonics may have a unique role to play in the forthcoming era of new ground-based astronomical facilities, and possibly in the field of space science.

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“…Beyond the application of optical fibers, the last two decades have seen more sophisticated applications of waveguides for astronomical instrumentation, such that the term "Astrophotonics" was coined [13]. The emerging field of Astrophotonics is sketched in [14], and more comprehensively described in a recent review [15]. Here we summarize results achieved at the innovation center innoFSPEC Potsdam [16,17], [18] with a focus on photonic integrated circuits.…”

Section: Introductionmentioning

confidence: 99%

Astrophotonics: photonic integrated circuits for astronomical instrumentation

Roth

Madhav

Stoll

et al. 2023

Integrated Optics: Devices, Materials, and Technologies XXVII

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Photonic Integrated Circuits (PIC) are best known for their important role in the telecommunication sector, e.g. high speed communication devices in data centers. However, PIC also hold the promise for innovation in sectors like life science, medicine, sensing, automotive etc. The past two decades have seen efforts of utilizing PIC to enhance the performance of instrumentation for astronomical telescopes, perhaps the most spectacular example being the integrated optics beam combiner for the interferometer GRAVITY at the ESO Very Large Telescope. This instrument has enabled observations of the supermassive black hole in the center of the Milky Way at unprecedented angular resolution, eventually leading to the Nobel Price for Physics in 2020. Several groups worldwide are actively engaged in the emerging field of astrophotonics research, amongst them the innoFSPEC Center in Potsdam, Germany. We present results for a number of applications developed at innoFSPEC, notably PIC for integrated photonic spectrographs on the basis of arrayed waveguide gratings and the PAWS demonstrator (Potsdam Arrayed Waveguide Spectrograph), PIC-based ring resonators in astronomical frequency combs for precision wavelength calibration, discrete beam combiners (DBC) for large astronomical interferometers, as well as aperiodic fiber Bragg gratings for complex astronomical filters and their possible derivatives in PIC.

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Astrophotonics: astronomy and modern optics

Cited by 16 publications

References 350 publications

Ultrafast Laser Volume Nanostructuring of Transparent Materials: From Nanophotonics to Nanomechanics

Ultrafast Laser Volume Nanostructuring of Transparent Materials: From Nanophotonics to Nanomechanics

A report on the status of astrophotonics for optical/IR interferometry and beyond

Astrophotonics: photonic integrated circuits for astronomical instrumentation

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