Measuring the optical properties of two-dimensional photonic crystals in the near infrared

1999 ◽  
pp. 406-425
Author(s):  
D. Labilloy ◽  
H. Benisty ◽  
C. Weisbuch ◽  
T. F. Krauss ◽  
C. J. M. Smith ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Two Dimensional

scholarly journals NEGATIVE REFRACTION AND SUBWAVELENGTH FOCUSING USING PHOTONIC CRYSTALS

2004 ◽  
Vol 18 (25) ◽  
pp. 1275-1291 ◽  
Author(s):  
EKMEL OZBAY ◽  
KAAN GUVEN ◽  
ERTUGRUL CUBUKCU ◽  
KORAY AYDIN ◽  
B. KAMIL ALICI
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Negative Refraction ◽  
Numerical Study ◽  
Effective Index ◽  
Index Of Refraction ◽  
Far Field ◽  
Two Dimensional ◽  
Flat Lens ◽  
Effective Index Of Refraction

In this article, we present an experimental and numerical study of novel optical properties of two-dimensional dielectric photonic crystals (PCs) which exhibit negative refraction. We investigate two mechanisms which utilize the band structure of the PC to generate a negative effective index of refraction (n eff <0) and demonstrate the negative refraction experimentally. To the isotropic extend of n eff , different PC slab structures are employed to focus the radiation of a point source. It is shown experimentally that the PC can generate an image of the source with subwavelength resolution in the vicinity of the PC interface. Using a different PC, one can also obtain a far field focusing. In the latter case, we explicitly show the flat lens behavior of the structure. These examples indicate that PC-based lenses can surpass limitations of conventional lenses and lead to novel optics applications.

Use of guided spontaneous emission of a semiconductor to probe the optical properties of two-dimensional photonic crystals

1997 ◽  
Vol 71 (6) ◽  
pp. 738-740 ◽  
Author(s):  
D. Labilloy ◽  
H. Benisty ◽  
C. Weisbuch ◽  
T. F. Krauss ◽  
R. Houdré ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Spontaneous Emission ◽  
Two Dimensional

Optical properties and photonic mode dispersion in two-dimensional and waveguide-embedded photonic crystals

2003 ◽  
Vol 139 (3) ◽  
pp. 695-700 ◽  
Author(s):  
L.C. Andreani ◽  
M. Agio ◽  
D. Bajoni ◽  
M. Belotti ◽  
M. Galli ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Two Dimensional ◽  
Mode Dispersion

From Opals to Optics: Colloidal Photonic Crystals

MRS Bulletin ◽  
2001 ◽  
Vol 26 (8) ◽  
pp. 637-641 ◽  
Author(s):  
Vicki L. Colvin
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Photonic Bandgap ◽  
Length Scale ◽  
Ordered Arrays ◽  
Colloidal Photonic Crystals ◽  
Infrared Wavelengths

Over a decade ago, theorists predicted that photonic crystals active at visible and near-infrared wavelengths would possess a variety of exciting optical properties. Only in the last several years, however, have experimentalists begun to build materials that realize this potential in the laboratory. This lag between experiment and theory is primarily due to the to the challenges associated with fabricating these unique materials. As the term “crystal” suggests, these samples must consist of highly perfect ordered arrays of solids. However, unlike conventional crystals, which exhibit order on the angstrom length scale, photonic crystals must have order on the submicrometer length scale. In addition, many of the most valuable properties of photonic crystals are only realized when samples possess a “full” photonic bandgap. For such systems, large dielectric contrasts and particular crystal symmetries create a range of frequencies over which light cannot propagate. Realizing the nanoscopic architectures required to form such systems is a challenge for experimentalists. As a result, fabrication schemes that rely on lithographic techniques or spontaneous assembly have been a focus in the development of the field.

scholarly journals Bio-inspired spatially variant photonic crystals for self-collimation and beam-steering applications in the near-infrared spectrum

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rudra Gnawali ◽  
Andrew Volk ◽  
Imad Agha ◽  
Tamara E. Payne ◽  
Amit Rai ◽  
...  
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Near Infrared ◽  
Beam Steering ◽  
Logic Gate ◽  
Logic Gates ◽  
Dielectric Materials ◽  
Optical Systems ◽  
Optical Logic ◽  
Spatially Variant

AbstractThe self-collimation of light through Photonic Crystals (PCs) due to their optical properties and through a special geometric structure offers a new form of beam steering with highly optical control capabilities for a range of different applications. The objective of this work is to understand self-collimation and bending of light beams through bio-inspired Spatially Variant Photonic Crystals (SVPCs) made from dielectric materials such as silicon dioxide and common polymers used in three-dimensional printing like SU-8. Based upon natural PCs found in animals such as butterflies and fish, the PCs developed in this work can be used to manipulate different wavelengths of light for optical communications, multiplexing, and beam-tuning devices for light detection and ranging applications. In this paper, we show the optical properties and potential applications of two different SVPC designs that can control light through a 90-degree bend and optical logic gates. These two-dimensional SVPC designs were optimized for operation in the near-infrared range of approximately 800–1000 nm for the 90-degree bend and 700–1000 nm for the optical logic gate. These SVPCs were shown to provide high transmission through desired regions with low reflection and absorption of light to prove the potential benefits of these structures for future optical systems.

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