25 citations · 54 across the 8 of their papers we have counts for
8 papers
Tellurium Metasurface Beam Splitter with Pulse Laser-Controlled Anisotropy
Takuto Hiraoka, Mizuho Matoba, Yuta Kobayashi +5
Laser-programmable optical anisotropy offers a new route to developing reconfigurable metasurfaces without conventional nanofabrication processes. Here, we demonstrate a lithograph…
3D Printed Alumina as a Millimeter-Wave Optical Element
Rex Lam, Scott Cray, Sam Dietterich +10
We present millimeter and sub-millimeter room temperature transmission and loss measurements of 3D printed alumina disc and of a disc with one-sided 3D printed sub-wavelength struc…
Silicon-based vacuum window for millimeter and submillimeter-wave astrophysics
Ryota Takaku, Scott Cray, Kosuke Aizawa +7
We designed, fabricated, and characterized the properties of a silicon-based vacuum window suitable for millimeter-wave astrophysical applications. The window, which has a diameter…
Prototype sub-wavelength structure anti-reflection coating on alumina filters for ground-based CMB telescopes
Kosuke Aizawa, Ryosuke Akizawa, Scott Cray +8
We present designs and fabrication of sub-wavelength anti-reflection (AR) structures on alumina for infrared absorptive filters with passbands near 30, 125, and 250 GHz. These band…
Anti-reflection coating with mullite and Duroid for large-diameter cryogenic sapphire and alumina optics
Kana Sakaguri, Masaya Hasegawa, Yuki Sakurai +10
We developed a broadband two-layer anti-reflection (AR) coating for use on a sapphire half-wave plate (HWP) and an alumina infrared (IR) filter for the cosmic microwave background…
Mid-infrared wide-field nanoscopy
Miu Tamamitsu, Keiichiro Toda, Venkata Ramaiah Badarla +3
Mid-infrared (MIR) spectroscopy is widely recognized as a powerful, non-distractive method for chemical analysis. However, its utility is constrained by a micrometer-scale spatial…
Critical Power for Temporal-Pulse Collapse in Third-Harmonic Generation
Wataru Komatsubara, Kuniaki Konishi, Junji Yumoto +1
The self-trapping critical power of light propagation is one of the key physical quantities characterizing nonlinear-beam propagation. Above the critical power, the spatial and tem…
Broadband, millimeter-wave anti-reflective structures on sapphire ablated with femto-second laser
R. Takaku, S. Hanany, H. Imada +13
We designed, fabricated, and measured anti-reflection coating (ARC) on sapphire that has 116% fractional bandwidth and transmission of at least 97% in the millimeter wave band. The…