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Tunable Polymer/Air‐Bragg Optical Microcavity Configurations for Controllable Light–Matter Interaction Scenarios
Author(s) -
Palekar Chirag Chandrakant,
Rahimi-Iman Arash
Publication year - 2021
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.202100182
Subject(s) - materials science , lithography , resonator , photoresist , optical microcavity , optoelectronics , optics , photonics , cladding (metalworking) , photonic crystal , nanotechnology , laser , physics , layer (electronics) , metallurgy
Complex optical systems such as high‐quality microcavities enabled by advanced lithography and processing techniques have paved the way to various light–matter interaction (LMI) studies. Sub‐micrometer‐precise lithographic development of a polymer photoresist allows construction of microcavity structures for various spectral regions based on the material's transparency and the geometrical sizes. On the other hand, this approach also avoids lattice‐matching constraints in epitaxy, complex coating techniques, and shaky open‐cavity constructions. Herein, a new approach based on 3D nanowriting in a photoresist is introduced, which can be used to achieve microscopic photonic Fabry–Pérot cavity structures with mechanically tunable resonator modes and polymer/air‐Bragg mirrors, directly on a chip or device substrate. By transfer‐matrix calculations and computer‐assisted modeling, it is demonstrated that open microcavities with up to two “air‐Bragg” reflectors comprising alternating polymer/air‐mirror‐pair layers enable compression‐induced mode tuning that can benefit many LMI experiments, such as with 2D materials, nanoparticles, and molecules.