Development of gradient index microlenses for the broadband infrared range

Autor: Rafal Kasztelanic, Adam Filipkowski, Dariusz Pysz, Hue Thi Nguyen, Ryszard Stepien, Sheng Liang, Johann Troles, Pentti Karioja, Ryszard Buczynski
Přispěvatelé: University of Warsaw (UW), Łukasiewicz Research Network-PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland, Beijing Jiaotong University (BJTU), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), VTT Technical Research Centre of Finland (VTT), Horizon 2020 Framework Programme [722380], H2020 Industrial Leadership (EU-H2020-ICT-2014) [644192], Fundacja na rzecz Nauki Polskiej [TEAM TECH/2016-1/1], European Regional Development FundEuropean Commission [POIR.04.04.00-00-1C74/16], European Project: 644192,H2020,H2020-ICT-2014-1,MIREGAS(2015)
Rok vydání: 2022
Předmět:
Zdroj: Kasztelanic, R, Filipkowski, A, Pysz, D, Nguyen, H T, Stepien, R, Liang, S, Troles, J, Karioja, P & Buczynski, R 2022, ' Development of gradient index microlenses for the broadband infrared range ', Optics Express, vol. 30, no. 2, pp. 2338-2352 . https://doi.org/10.1364/OE.448461
Optics Express
Optics Express, 2022, 30 (2), pp.2338-2352. ⟨10.1364/OE.448461⟩
ISSN: 1094-4087
DOI: 10.1364/OE.448461
Popis: The development of gradient index free-form micro-optic components dedicated to the mid-infrared range is challenging due to the lack of appropriate technology. We propose a method for developing gradient index components for broadband infrared range beyond the transmission window of silicate glass based on nanostructurization using a stack-and-draw fiber drawing technique. A proof-of-concept microlens is developed and verified experimentally in the wavelength range 1.5–4.3 µm. The microlenses are composed of a set of nanorods with a diameter of 940 nm made of a pair of SiO2-PbO-Bi2O3-Ga2O3 based glasses ordered into the preliminary calculated binary pattern. The pattern forms effectively continuous parabolic refractive index distribution for infrared range according to Maxwell-Garnett effective medium model. The development of individual microlenses with a diameter of 118 µm and focal length of 278 µm at the wavelength of 3.75 µm are reported. A large array of 737 microlenses with an individual diameter of 125 µm and focal length of 375 µm is also presented and analyzed.
Databáze: OpenAIRE
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