• Corpus ID: 253761601

Direct laser written aperiodic photonic volume elements for complex light shaping with high efficiency: inverse design and fabrication

@inproceedings{Barre2022DirectLW,
  title={Direct laser written aperiodic photonic volume elements for complex light shaping with high efficiency: inverse design and fabrication},
  author={Nicolas Barr'e and Ravi Shivaraman and Simon Moser and Patrick S. Salter and M. Schmidt and Martin J. Booth and Alexander Jesacher},
  year={2022}
}
Light plays the central role in many applications. The key to unlocking its versatility lies in shaping it into the most appropriate form for the task at hand. Specifically tailored refractive index modifications, directly manufactured inside glass using a short pulsed laser, enable an almost arbitrary control of the light flow. However, the stringent requirements for quantitative knowledge of these modifications, as well as for fabrication precision, have so far prevented the fabrication of light… 

References

SHOWING 1-10 OF 51 REFERENCES

Metasurfaces-based holography and beam shaping: engineering the phase profile of light

Abstract The ability to engineer and shape the phase profile of optical beams is in the heart of any optical element. Be it a simple lens or a sophisticated holographic element, the functionality of

Aperiodic Volume Optics

Volumetric integrated optical micro- and nanosystems are becoming the new frontier in photonics. Fine control over the material structure within a volume enables novel physical phenomena and

Inverse design of gradient-index volume multimode converters.

Graded-index optical elements are capable of shaping light precisely and in very specific ways. While classical freeform optics uses only a two-dimensional domain such as the surface of a lens,

Tunable structured light with flat optics

Flat optics has emerged as a key player in the area of structured light and its applications, owing to its subwavelength resolution, ease of integration, and compact footprint. Although its first

Tomographic refractive index profiling of direct laser written waveguides.

A tomographic reconstruction algorithm following a modern optimization approach, relying on accelerated proximal gradient descent, based on intensity images only is developed, and it is shown that a correct estimation of these aberrations is necessary to make use of data recorded at larger angles and that it can increase the fidelity of the reconstructed RI profiles.

Adjoint-optimized metasurfaces for compact mode-division multiplexing

Optical fiber communications rely on multiplexing techniques that encode information onto various degrees of freedom of light to increase the transmission capacity of a fiber. However, the rising

Micromachining of photonic devices by femtosecond laser pulses

In this paper we review the micromachining of photonic devices in several materials by means of ultrashort laser pulses. The physical mechanisms underlying the refractive index modification and the

Flat optics with designer metasurfaces.

This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.

Heterogeneous 2D/3D photonic integrated microsystems

It is shown that heterogeneous 2D/3D photonic integration retains the advantages of 2D PICs and 3D waveguides, which can potentially benefit many other applications.

How to Build the “Optical Inverse” of a Multimode Fibre

When light propagates through multimode optical fibres (MMFs), the spatial information it carries is scrambled. Wavefront shaping reverses this scrambling, typically one spatial mode at a
...