scholarly journals Large scale indium tin oxide (ITO) one dimensional gratings for ultrafast signal modulation in the visible spectral region

2020 ◽  
Vol 22 (13) ◽  
pp. 6881-6887 ◽  
Author(s):  
Michele Guizzardi ◽  
Silvio Bonfadini ◽  
Liliana Moscardi ◽  
Ilka Kriegel ◽  
Francesco Scotognella ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Large Scale ◽  
Near Infrared ◽  
Infrared Region ◽  
Visible Spectral Region ◽  
Signal Modulation ◽  
One Dimensional ◽  
Heavily Doped ◽  
Near Infrared Region

Indium tin oxide (ITO) is a heavily doped semiconductor with a plasmonic response in the near infrared region.

scholarly journals Indium Tin Oxide Coated Two-Mode Fiber for Enhanced SPR Sensor in Near-Infrared Region

2017 ◽  
Vol 9 (6) ◽  
pp. 1-9 ◽  
Author(s):  
Yajun Wang ◽  
Jiangli Dong ◽  
Yunhan Luo ◽  
Jieyuan Tang ◽  
Huihui Lu ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Near Infrared ◽  
Infrared Region ◽  
Spr Sensor ◽  
Near Infrared Region

scholarly journals Large Scale Indium Tin Oxide (ITO) One Dimensional Gratings for Ultrafast Signal Modulation in the Visible

2019 ◽  
Author(s):  
Michele Guizzardi ◽  
Silvio Bonfadini ◽  
Liliana Moscardi ◽  
Ilka Kriegel ◽  
Francesco Scotognella ◽  
...  
Keyword(s):  
Band Gap ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Photonic Band Gap ◽  
Visible Range ◽  
Signal Modulation ◽  
One Dimensional ◽  
Photonic Band

We present a photophysical study on an indium tin oxide (ITO) one dimensional grating, realized using femtosecond micromachining technology, a technology very industrially accessible. The geometries, dimensions and pitch of the various gratings analyzed are obtained by means of direct ablation in a controlled atmosphere of a homogeneous thin layer of ITO deposited on a glass substrate. The pitch has been selected in order to obtain a higher order of the photonic band gap in the visible. By means of ultrafast pump-probe spectroscopy we characterize both the plasmon and inter-band temporal dynamics. We observe a large optical non-linearity of ITO grating in the visible range, where the photonic band gap occurs, when pumped at the surface plasmon resonance in the near infrared (1500 nm). All together we show the possibility of all-optical signal modulation with heavily doped semiconductors in their transparency window with a picosecond response time through the formation of ITO grating structures.

scholarly journals Large Scale Indium Tin Oxide (ITO) One Dimensional Gratings for Ultrafast Signal Modulation in the Visible

2019 ◽  
Author(s):  
Michele Guizzardi ◽  
Silvio Bonfadini ◽  
Liliana Moscardi ◽  
Ilka Kriegel ◽  
Francesco Scotognella ◽  
...  
Keyword(s):  
Band Gap ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Photonic Band Gap ◽  
Visible Range ◽  
Signal Modulation ◽  
One Dimensional ◽  
Photonic Band

We present a photophysical study on an indium tin oxide (ITO) one dimensional grating, realized using femtosecond micromachining technology, a technology very industrially accessible. The geometries, dimensions and pitch of the various gratings analyzed are obtained by means of direct ablation in a controlled atmosphere of a homogeneous thin layer of ITO deposited on a glass substrate. The pitch has been selected in order to obtain a higher order of the photonic band gap in the visible. By means of ultrafast pump-probe spectroscopy we characterize both the plasmon and inter-band temporal dynamics. We observe a large optical non-linearity of ITO grating in the visible range, where the photonic band gap occurs, when pumped at the surface plasmon resonance in the near infrared (1500 nm). All together we show the possibility of all-optical signal modulation with heavily doped semiconductors in their transparency window with a picosecond response time through the formation of ITO grating structures.

scholarly journals Large Scale Indium Tin Oxide (ITO) One Dimensional Gratings for Ultrafast Signal Modulation in the Visible

2019 ◽  
Author(s):  
Francesco Scotognella
Keyword(s):  
Band Gap ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Photonic Band Gap ◽  
Visible Range ◽  
Signal Modulation ◽  
One Dimensional ◽  
Photonic Band

We present a photophysical study on an indium tin oxide (ITO) one dimensional grating, realized using femtosecond micromachining technology, a technology very industrially accessible. The geometries, dimensions and pitch of the various gratings analyzed are obtained by means of direct ablation in a controlled atmosphere of a homogeneous thin layer of ITO deposited on a glass substrate. The pitch has been selected in order to obtain a higher order of the photonic band gap in the visible. By means of ultrafast pump-probe spectroscopy we characterize both the plasmon and inter-band temporal dynamics. We observe a large optical non-linearity of ITO grating in the visible range, where the photonic band gap occurs, when pumped at the surface plasmon resonance in the near infrared (1500 nm). All together we show the possibility of all-optical signal modulation with heavily doped semiconductors in their transparency window with a picosecond response time through the formation of ITO grating structures.

scholarly journals Stable and tunable plasmon resonance of molybdenum oxide nanosheets from the ultraviolet to the near-infrared region for ultrasensitive surface-enhanced Raman analysis

2019 ◽  
Vol 10 (25) ◽  
pp. 6330-6335 ◽  
Author(s):  
Jinhu Wang ◽  
Yinhua Yang ◽  
Hua Li ◽  
Jun Gao ◽  
Ping He ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Region ◽  
Raman Analysis ◽  
Surface Protection ◽  
Surface Enhanced ◽  
Color Tunable ◽  
Surface Enhanced Raman ◽  
Heavily Doped ◽  
Near Infrared Region ◽  
Preparation Strategy

Preparation of color-tunable and stable plasmonic MoO3 nanomaterials remains challenging, due to the lack of an effective preparation strategy and surface protection in heavily doped MoO3.

Near Infrared High Angular Resolution Observations of Stars and Circumstellar Regions by the Technique of Lunar Occultations

1994 ◽  
Vol 158 ◽  
pp. 376-378
Author(s):  
T. Chandrasekhar ◽  
N. M. Ashok ◽  
Sam Ragland
Keyword(s):  
High Speed ◽  
Near Infrared ◽  
Angular Resolution ◽  
Infrared Region ◽  
High Angular Resolution ◽  
Filter Bandwidth ◽  
One Dimensional ◽  
Near Infrared Region ◽  
System Frequency ◽  
Source Structure

A program of High Angular Resolution observations of stars and their circumstellar regions using the technique of lunar occultations has been initiated at the 1.2 m telescope at Gurushikhar (24°39′ N, 72°47′ E), India. A liquid nitrogen cooled InSb detector based high speed Infrared photometer with millisecond data acquisition capabilities has been developed for the near Infrared region (1–5 μm) and eight occultations have been successfully observed in the K band (2.2 μm). The sources are (IRC No. -10578, +10013, +20034, +30094, +20190, +20200, +20073 and +00198. The diffraction pattern is clearly seen in all the observations. A convolution analysis involving the system frequency response, filter bandwidth and one dimensional source structure has been carried out to fit the data. System capability has been determined to be ~ 6 milliarcseconds.

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