Thermal shrinkage-induced modifications in photonic band gaps of two-photon polymerized Bragg reflectors
Thermal shrinkage-induced modifications in photonic band gaps of two-photon polymerized Bragg reflectors
1D polymer-based photonic crystals in the 1.55 μm wavelength range can be easily created using a two-photon direct laser writing system. To achieve shorter period structures, the use of thermal shrinkage of two-photon polymerized structures is reported at elevated temperatures, to eliminate unpolymerized material, leading to the uniform shrinkage of the distributed Bragg reflector (DBR) structures by a ratio of ≈2.5 to 5. The finite-difference time-domain simulation and the angle-resolved light scattering characterization technique using the Fourier image spectroscopy measurements show that the low-order photonic bandgaps of DBRs blueshift across the NIR–visible region (850 to 400 nm) as the shrinkage increases.
Chen, Yu-Shao Jacky
7741cb07-43c6-4eeb-a95f-aac8b632af27
Taverne, Mike P.C.
6444e2cd-5d52-43a7-83b6-2e72f922501d
Huang, Kevin Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Ho, Ying-Lung Daniel
945e3431-b334-4d98-858f-c3fae452640f
Rarity, John G.
f7e3ab11-2a7c-4242-bf27-93f1adb5420f
7 July 2025
Chen, Yu-Shao Jacky
7741cb07-43c6-4eeb-a95f-aac8b632af27
Taverne, Mike P.C.
6444e2cd-5d52-43a7-83b6-2e72f922501d
Huang, Kevin Chung-Che
825f7447-6d02-48f6-b95a-fa33da71f106
Ho, Ying-Lung Daniel
945e3431-b334-4d98-858f-c3fae452640f
Rarity, John G.
f7e3ab11-2a7c-4242-bf27-93f1adb5420f
Chen, Yu-Shao Jacky, Taverne, Mike P.C., Huang, Kevin Chung-Che, Ho, Ying-Lung Daniel and Rarity, John G.
(2025)
Thermal shrinkage-induced modifications in photonic band gaps of two-photon polymerized Bragg reflectors.
Advanced Photonics Research, [2500077].
(doi:10.1002/adpr.202500077).
Abstract
1D polymer-based photonic crystals in the 1.55 μm wavelength range can be easily created using a two-photon direct laser writing system. To achieve shorter period structures, the use of thermal shrinkage of two-photon polymerized structures is reported at elevated temperatures, to eliminate unpolymerized material, leading to the uniform shrinkage of the distributed Bragg reflector (DBR) structures by a ratio of ≈2.5 to 5. The finite-difference time-domain simulation and the angle-resolved light scattering characterization technique using the Fourier image spectroscopy measurements show that the low-order photonic bandgaps of DBRs blueshift across the NIR–visible region (850 to 400 nm) as the shrinkage increases.
Text
Advanced Photonics Research - 2025 - Chen - Thermal Shrinkage‐Induced Modifications in Photonic Bandgaps of Two‐Photon
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Accepted/In Press date: 18 June 2025
e-pub ahead of print date: 7 July 2025
Published date: 7 July 2025
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Local EPrints ID: 503382
URI: http://eprints.soton.ac.uk/id/eprint/503382
ISSN: 2699-9293
PURE UUID: f8c832ea-4ad0-4c28-9458-da42c46967c1
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Date deposited: 30 Jul 2025 16:31
Last modified: 18 Sep 2025 01:40
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Author:
Yu-Shao Jacky Chen
Author:
Mike P.C. Taverne
Author:
Kevin Chung-Che Huang
Author:
Ying-Lung Daniel Ho
Author:
John G. Rarity
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