CC BY
3The 30th International Conference on Advanced Laser Technologies N-I-12
ALT'23
THz optical elements based on the shaped sapphire crystals and
porous opals
G. M. Katyba12, V.E. Ulitko, A.S. Kucheryavenko12, V.A. Zhelnov12, N.V. Chernomyrdin2 3, I.N. Dolganova1, K. I. Zaytsev2,3, and V. N. Kurlov1
1-Institute of Solid State Physics of RAS, 2 Academician Osipyan str., Chernogolovka, 142432 Russia 2- Prokhorov General Physics Institute of RAS, 38 Vaviliva str., Moscow, 119991, Russia 3-Bauman Moscow State Technical University, 2-ndBaumanskaya str., Moscow, 105005, Russia
email: katyba_gm@issp.ac.ru
During the past few years, we introduced various materials for THz optical elements designing. The sapphire shaped crystals which are characterized by the relatively low THz wave losses, high refractive index and high inertness to external environment. Waveguides, fibers and fiber bundles based on the shaped sapphire could be used both for low-loss radiation delivery and for superresolution imaging tasks [1-5]. Recently we developed the hollow-core THz waveguides with polymer cladding for managing the angular distribution of the two-color laser air plasma emitter [6], Moreover, such waveguides with the combination of the sapphire solid immersion lens could be used for the endoscopic system development [7] with spatial resolution around 0.19 L Artificial opals based on the colloidal SiO2 nanoparticles also were considered as perspective THz material with manageable optical properties [8]. It was reported that variety of bulk THz optical elements, such as cylindrical and axicone lens, could be created from this material, while the optical properties are tuned by the annealing at different temperatures [9]. The investigation of the possible interactions between such a porous material and water vapors from the atmosphere has the significant interest for THz element designing. We report about the new results of the moisture adsorption studying by artificial SiO2 opals using THz pulsed spectroscopy [10].
This work was supported by the Russian Science Foundation (RSF), research project # 22-72-10033.
[1]K. I. Zaytsev, G. M. Katyba, V. N. Kurlov, I. A. Shikunova, V. E. Karasik, S. O. Yurchenko, Terahertz Photonic Crystal Waveguides Based on Sapphire Shaped Crystals, IEEE Transactions on Terahertz Science and Technology, 6(4), 576 (2016).
[2]G. M. Katyba, K. I. Zaytsev, N. V. Chernomyrdin, I. A. Shikunova, G. A. Komandin, V. B. Anzin, S. P. Lebedev, I. E. Spektor, V. E. Karasik, S.
0. Yurchenko, I. V. Reshetov, V. N. Kurlov, M. Skorobogatiy, Sapphire Photonic Crystal Waveguides for Terahertz Sensing in Aggressive Environments, Advanced Optical Materials, 6(22), 1800573 (2018).
[3]G. M. Katyba, K. I. Zaytsev, I. N. Dolganova, N. V. Chernomyrdin, V. E. Ulitko, S. N. Rossolenko, I. A. Shikunova, V. N. Kurlov, Sapphire waveguides and fibers for terahertz applications, Progress in Crystal Growth & Characterization of Materials 67(3), 100523 (2021).
[4]I. V. Minin, O. V. Minin, G. M. Katyba, N. V. Chernomyrdin, V. N. Kurlov, K. I. Zaytsev, L. Yue, Z. Wang, D. N. Christodoulides, Experimental observation of a photonic hook Applied Physics Letters, 114, 031105 (2019).
[5]G. M. Katyba, M. Skorobogatiy, D. G. Melikyants, N. V. Chernomyrdin, A. N. Perov, E. V. Yakovlev, I. N. Dolganova, I. E. Spektor, V. V. Tuchin, V. N. Kurlov, K. I.. Zaytsev, Superresolution Imaging Using a Tapered Bundle of High-Refractive-Index Optical Fibers, Physical Review Applied, 18(3), 34069 (2022).
[6]G. M. Katyba, P. A. Chizhov, V. N. Kurlov, I. N. Dolganova, S. V. Garnov, K. I. Zaytsev, V. V. Bukin, THz generation by two-color laser air plasma coupled to antiresonance hollow-core sapphire waveguides: THz-wave delivery and angular distribution management, Optics Express, 30(3), 4215-4230 (2022).
[7]A. S. Kucheryavenko, V. A. Zhelnov, D. G. Melikyants, N. V. Chernomyrdin, S. P. Lebedev, V. V. Bukin, S. V. Garnov, V. N. Kurlov, K. I. Zaytsev, G. M. Katyba, Super-resolution THz endoscope based on a hollow-core sapphire waveguide and a solid immersion lens, Optics Express, 31(8), 13366-13373 (2023).
[8] V. E. Ulitko, A. K. Zotov, A. A. Gavdush, G. M. Katyba, G. A. Komandin, I. E. Spektor, I. M. Shmytko, G. A. Emelchenko, I. N. Dolganova, M. Skorobogatiy, V. N. Kurlov, V. M. Masalov, K. I. Zaytsev, Nanoporous SiO2 based on annealed artificial opals as a favorable material platform of terahertz optics, Optical Materials Express, 10(9), 2100-2113 (2020).
[9] V. E. Ulitko, G. M. Katyba, V. A. Zhelnov, I. M. Shmytko, G. A. Emelchenko, I. E. Spector, V. M. Masalov, V. N. Kurlov, K. I. Zaytsev, M. Skorobogatiy, Opal-based terahertz optical elements fabricated by self-assembly of porous SiO2 nanoparticles, Optics Express, 29(9), 13764-13777 (2021).
[10] V. E. Ulitko, G. R. Musina, V. M. Masalov, A. A. Gavdush, G. A. Emelchenko, V. V. Bukin, V.N. Kurlov, M. Skorobogatiy, G. M. Katyba, K.
1. Zaytsev, Moisture adsorption by porous terahertz optical materials: a case study of artificial SiO2 opals, 13(4), 1163-1176 (2023).
