Fabrication of high-Q chalcogenide photonic crystal resonators by e-beam lithography

Ruan, Yinlan; Kim, Myung Ki; Lee, Yong He; Luther‐Davies, Barry; Rode, Andrei

doi:10.1063/1.2476416

Cited by 42 publications

(24 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Photonic crystals may also be fabricated from materials that are not semiconductors-for example, chalcogenide glasses, which have highly nonlinear properties, may also be patterned by e-beam lithography [42]. Another (somewhat unusual) platform for photonic crystals is moulded silk [43], which is biocompatible.…”

Section: Fabricationmentioning

confidence: 99%

Photonic-crystal surface modes found from impedances

et al. 2010

View full text Add to dashboard Cite

We present a rigorous definition of a wave impedance for 2D rectangular and triangular lattice photonic crystals (PCs), in the form of a matrix. Reflection and transmission at an interface between PCs can be represented by matrices that relate the Bloch mode (eigenmode) amplitudes in the two PCs; we show that these matrices, which are multi-mode generalisations of reflection and transmission coefficients, may be calculated from the PCs' impedances that we define.Given the impedances and Bloch factors (propagation constants) of a collection of PCs, the reflection and transmission properties of arbitrary stacks of these PCs may be calculated efficiently using a few matrix operations. Therefore our definition enables PC-based antireflection coatings to be designed efficiently: some computationally expensive simulations are required in an initial step to find a range of PCs' impedances, but then the reflectances of every coating that consists of a stack of these PCs can be calculated without any further simulations.We first define the PC impedance from the transfer matrix of a single PC layer (i.e., a grating). Since transfer matrix methods are not especially widespread, we also present a method and associated source code to extract a PC's propagating and evanescent Bloch modes from a scattering calculation that can be performed by any off-the-shelf field solver, and to calculate impedances from the extracted modal fields.Finally, we put our method to use. We apply it to design antireflection coatings, nearly eliminating reflection at a single frequency for one or both polarisations, or lowering it across a larger bandwidth. We use it to find surface modes at interfaces between PCs and air, and their projected band structures. We use the impedance to define effective parameters for PC homogenisation, and we briefly describe how our definition has been used to dispersion engineer a PC waveguide. Statement of contribution for joint author publicationsLawrence, F. J. et al. "Antireflection coatings for two-dimensional photonic crystals using a rigorous impedance definition". Appl. Phys. Lett. 93, 1114Lett. 93, (2008 This Letter is partially based on work done in FL's Honours year, and partially on work done during his PhD. Most of the software used was provided by KD and LB, and FL extended it in collaboration with them. In FL's PhD he extended the software implementation of the method (with help from KD and LB) to support non-normal incidence and frequencies above the first Wood anomaly. FL wrote the letter, which was heavily edited and proofread by MdS, KD, and LB.Lawrence, F. J. et al. "Impedance of square and triangular lattice photonic crystals". Phys. Rev. A 80, 23826 (2009) The suggestion of generalising the method to triangular lattices was made by FL's supervisors. LB supplied the orthogonality relations, which as noted in the paper are from previous work, and FL worked out how to use these to define the impedance for these structures. LB suggested the final notation used in the paper. Taking the Ma...

show abstract

Section: Fabricationmentioning

confidence: 99%

Photonic-crystal surface modes found from impedances

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The desire for an even faster response time motivates the research on alternative materials with a strong optical Kerr effect. Much progress has been made in processing chalcogenide crystals with high-Q PC microcavities have been demonstrated recently [18]. III-V semiconductors are also good candidates for optical switching as they * Electronic address: alfredo.derossi@thalesgroup.com † Also at Engineering Department, University of Ferrara, Italy.…”

Section: Introductionmentioning

confidence: 99%

Interplay of plasma-induced and fast thermal nonlinearities in a GaAs-based photonic crystal nanocavity

et al. 2009

View full text Add to dashboard Cite

We investigate the nonlinear response of GaAs-based photonic crystal cavities at time scales which are much faster than the typical thermal relaxation rate in photonic devices. We demonstrate a strong interplay between thermal and carrier induced nonlinear effects. We have introduced a dynamical model entailing two thermal relaxation constants which is in very good agreement with experiments. These results will be very important for Photonic Crystal-based nonlinear devices intended to deal with practical high repetition rate optical signals.

show abstract

“…The dielectric is assumed to be chalcogenide glass, which has a linear refractive index n 0 = 3.1 [21] and a radius of air holes r = 0.32a. In addition, chalcogenide-glass-based optical devices are compatible with silicon micro-fabrication technology [22]. PC waveguides are created as line defects by setting the radius of line air holes r d = 0.12a instead of removing them perfectly, referred as decreased-index W1 waveguide (compared with conventional W1 PC waveguides) [23,24].…”

Section: Photonic Crystal Fabry-perot Resonatorsmentioning

confidence: 99%

Channel drop filters using photonic crystal Fabry–Perot resonators

Ogusu

2011

Optics Communications

View full text Add to dashboard Cite

Fabrication of high-Q chalcogenide photonic crystal resonators by e-beam lithography

Cited by 42 publications

References 11 publications

Photonic-crystal surface modes found from impedances

Photonic-crystal surface modes found from impedances

Interplay of plasma-induced and fast thermal nonlinearities in a GaAs-based photonic crystal nanocavity

Channel drop filters using photonic crystal Fabry–Perot resonators

Contact Info

Product

Resources

About