TY - JOUR

T1 - Diamond diffractive lens with a continuous profile for powerful terahertz radiation

AU - Komlenok, Maxim

AU - Kononenko, Taras

AU - Sovyk, Dmitry

AU - Pavelyev, Vladimir

AU - Knyazev, Boris

AU - Ashkinazi, Evgeny

AU - Reshetnikov, Anton

AU - Komandin, Gennadii

AU - Pashinin, Vladimir

AU - Ralchenko, Victor

AU - Konov, Vitaly

N1 - Funding Information: Russian Foundation for Basic Research (18-32-20226). The experiments were carried out using the infrastructure of (i) the shared research facility Siberian Synchrotron and Terahertz Radiation Center (SSTRC) based on NovoFEL of BINP SB RAS, and (ii) D. Mendeleev Center for collective use of scientific equipment (Moscow). Publisher Copyright: © 2021 Optical Society of America Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1/15

Y1 - 2021/1/15

N2 - An increase in the radiation power of terahertz (THz) sources requires the development of new optics working with it. The laser-assisted replication technique is proposed to fabricate the diamond cylindrical diffractive lens with a continuous profile for the THz range. The procedure involves the inverted structuring of a silicon substrate by laser ablation for its further replication to the diamond surface utilizing the chemical vapor deposition process. Testing of the fabricated lens performed with a free-electron laser at the wavelength of 141 µm has demonstrated high diffraction efficiency (95 ± 5%) and a good agreement between the measured and expected intensity distribution in the focal plane.

AB - An increase in the radiation power of terahertz (THz) sources requires the development of new optics working with it. The laser-assisted replication technique is proposed to fabricate the diamond cylindrical diffractive lens with a continuous profile for the THz range. The procedure involves the inverted structuring of a silicon substrate by laser ablation for its further replication to the diamond surface utilizing the chemical vapor deposition process. Testing of the fabricated lens performed with a free-electron laser at the wavelength of 141 µm has demonstrated high diffraction efficiency (95 ± 5%) and a good agreement between the measured and expected intensity distribution in the focal plane.

UR - http://www.scopus.com/inward/record.url?scp=85100118702&partnerID=8YFLogxK

U2 - 10.1364/OL.414097

DO - 10.1364/OL.414097

M3 - Article

C2 - 33449023

AN - SCOPUS:85100118702

VL - 46

SP - 340

EP - 343

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 2

ER -