Compact high-resolution imaging spectrometer (CHRIS) design and performance

2004 ◽  
Author(s):  
Mike A. Cutter
Keyword(s):  
High Resolution ◽  
High Resolution Imaging ◽  
Imaging Spectrometer ◽  
Resolution Imaging ◽  
And Performance

scholarly journals The Solar Orbiter SPICE instrument

2020 ◽  
Vol 642 ◽  
pp. A14 ◽  
Author(s):  
◽  
M. Anderson ◽  
T. Appourchaux ◽  
F. Auchère ◽  
R. Aznar Cuadrado ◽  
...  
Keyword(s):  
High Resolution ◽  
Data Processing ◽  
Extreme Ultraviolet ◽  
High Resolution Imaging ◽  
Concept Design ◽  
Performance Measurements ◽  
Imaging Spectrometer ◽  
Scientific Success ◽  
Resolution Imaging ◽  
Orbiter Mission

Aims. The Spectral Imaging of the Coronal Environment (SPICE) instrument is a high-resolution imaging spectrometer operating at extreme ultraviolet wavelengths. In this paper, we present the concept, design, and pre-launch performance of this facility instrument on the ESA/NASA Solar Orbiter mission. Methods. The goal of this paper is to give prospective users a better understanding of the possible types of observations, the data acquisition, and the sources that contribute to the instrument’s signal. Results. The paper discusses the science objectives, with a focus on the SPICE-specific aspects, before presenting the instrument’s design, including optical, mechanical, thermal, and electronics aspects. This is followed by a characterisation and calibration of the instrument’s performance. The paper concludes with descriptions of the operations concept and data processing. Conclusions. The performance measurements of the various instrument parameters meet the requirements derived from the mission’s science objectives. The SPICE instrument is ready to perform measurements that will provide vital contributions to the scientific success of the Solar Orbiter mission.

Strategies for calibration of high-resolution imaging spectrometer data

1997 ◽  
Author(s):  
Daniel R. Lobb ◽  
Nigel P. Fox ◽  
Michael Rast ◽  
Philip N. Slater ◽  
A. Wilson
Keyword(s):  
High Resolution ◽  
High Resolution Imaging ◽  
Imaging Spectrometer ◽  
Resolution Imaging ◽  
Spectrometer Data

Integration and testing of the compact high-resolution imaging spectrometer (CHRIS)

1999 ◽  
Author(s):  
Michael A. Cutter ◽  
Daniel R. Lobb ◽  
Thomas L. Williams ◽  
Robert E. Renton
Keyword(s):  
High Resolution ◽  
High Resolution Imaging ◽  
Imaging Spectrometer ◽  
Resolution Imaging

Progress in design, nanofabrication and performance of metalenses

2021 ◽  
Author(s):  
Zhenghao WANG ◽  
Yongling WU ◽  
Dongfeng QI ◽  
Wenhui YU ◽  
Hongyu ZHENG
Keyword(s):  
High Resolution ◽  
Near Infrared ◽  
Visible Range ◽  
Infrared Range ◽  
High Dispersion ◽  
High Resolution Imaging ◽  
Direct Writing ◽  
Nanoscale Structures ◽  
Resolution Imaging ◽  
And Performance

Abstract Metalens has been shown to overcome the diffraction limit of conventional optical lenses to achieve sub-wavelength resolution. Due to its planar structure and lightweight, metalens has the potential applications in the manufacture of flat lenses for cameras and other high resolution imaging optics. However, currently reported metalenses have low focusing efficiencies: 26% - 68% in THz and GHz range, 1% - 91% in near infrared range (NIR), and 5% - 91.6% in the visible range. Far field imaging in the visible light is essential for use in camera and mobile phones, which requires a complex metalens structure with multi-layers of alternating metal and dielectric layers. Most of the reported metalenses work in a single wavelength, mainly due to the high dispersion characteristics of the diffractive metalenses. It remains a challenge to realize high resolution imaging for a wide wavelength band in particular in the visible range. In this review, we report the state-of-the-art in metalens design principle, types of nanoscale structures, and various fabrication processes. We introduce femtosecond laser direct writing based on two-photon polymerization as an emerging nanofabrication technology. We provide an overview of the optical performance of the recently-reported metalenses and elaborate the major research and engineering challenges and future prospects.

Stray Light Measurement of Space-borne High Resolution Imaging Spectrometer

2010 ◽  
Vol 39 (7) ◽  
pp. 1319-1323
Author(s):  
张军强 ZHANG Jun-qiang ◽  
吴清文 WU Qing-wen ◽  
颜昌翔 YAN Chang-xiang
Keyword(s):  
High Resolution ◽  
Stray Light ◽  
High Resolution Imaging ◽  
Imaging Spectrometer ◽  
Light Measurement ◽  
Resolution Imaging

Microcantilever-Based Force Tracking With Applications to High-Resolution Imaging and Nanomanipulation

2008 ◽  
Author(s):  
Reza Saeidpourazar ◽  
Nader Jalili
Keyword(s):  
High Resolution ◽  
Force Sensor ◽  
High Resolution Imaging ◽  
Mems Devices ◽  
Modeling Framework ◽  
Sensing Platforms ◽  
Force Tracking ◽  
Resolution Imaging ◽  
And Performance ◽  
Mass Spring

This paper presents the development and implementation of a robust nonlinear control framework for piezoresistive nanomechanical cantilever (NMC)-based force tracking with applications to high-resolution imaging and nanomanipulation. Among varieties of nanoscale force sensing platforms, NMC is an attractive approach to measure and apply forces at this scale when compared with other previously reported configurations utilizing complicated MEMS devices or inconvenient-to-handle nanowires and nanotubes. More specifically, a piezoresistive layer is utilized here to measure nanoscale forces at the NMC’s tip instead of bulky laser-based feedback which is commonly used in Atomic Force Microscopy (AFM). In order to track a predefined force trajectory at the NMC’s tip, there is a need to model the piezoresistive NMC and design appropriate controller to move its base to provide the desired force. In previous publications of the authors, a new distributed-parameters modeling framework has been proposed to precisely predict the force acting on the microcantilever’s tip. In contrast to this approach and in an effort to ease the follow-up controller development, the NMC-based force sensor is modeled here as a lumped-parameters system. However, replacing the NMC with a linear mass-spring-damper trio, creates a variety of uncertainties and unmodeled dynamics that need to be addressed for a precise force sensor’s read-out. Moreover, the very slow response of NMC’s piezoresistive layer to force variations at the NMC’s tip, makes the tracking problem even more challenging. For this, a new controller is proposed to overcome these roadblocks. Using extensive numerical simulations and experimental results it is shown that utilizing the proposed controller instead of the commonly used PID controller can significantly enhance the controller’s stability and performance characteristics, and ultimately the imaging resolution and manipulation accuracy needed at this scale.

Sign in / Sign up

Export Citation Format

Share Document