An ultrastable Fourier-transform wide-field hyperspectral microscope for fluorescence and Raman imaging

2021 ◽  
Author(s):  
Cristian Manzoni ◽  
Gianluca Valentini ◽  
Andrea Bassi ◽  
Renzo Vanna ◽  
Giulio Cerullo ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Raman Imaging ◽  
Wide Field

A high-throughput Fourier-transform wide-field hyperspectral microscope for fluorescence and Raman imaging

2021 ◽  
Author(s):  
Cristian Manzoni ◽  
Daniela Comelli ◽  
Giulio N. Cerullo ◽  
Benedetto Ardini ◽  
Renzo Vanna ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Throughput ◽  
Raman Imaging ◽  
Wide Field

scholarly journals Light sheet-excited spontaneous Raman imaging of a living fish by optical sectioning in a wide field Raman microscope

2012 ◽  
Vol 20 (15) ◽  
pp. 16195 ◽  
Author(s):  
Yusuke Oshima ◽  
Hidetoshi Sato ◽  
Hiroko Kajiura-Kobayashi ◽  
Tetsuaki Kimura ◽  
Kiyoshi Naruse ◽  
...  
Keyword(s):  
Light Sheet ◽  
Raman Imaging ◽  
Wide Field ◽  
Optical Sectioning

A practical wide-field Raman imaging method with high spectral and spatial resolution

2018 ◽  
Vol 89 (8) ◽  
pp. 083103 ◽  
Author(s):  
Haibo Li ◽  
Wenhua Luo ◽  
Gan Li ◽  
Guangfeng Zhang ◽  
Pengcheng Zhang ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Raman Imaging ◽  
Imaging Method ◽  
Wide Field

Multiplexed Fourier Transform Infrared and Raman Imaging

2021 ◽  
pp. 299-312
Author(s):  
Guillermo Quintás ◽  
Bayden R. Wood ◽  
Hugh J. Byrne ◽  
David Perez-Guaita
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Raman Imaging

Wide field of view, ultracompact static Fourier-transform spectrometer

1997 ◽  
Vol 68 (1) ◽  
pp. 30-33 ◽  
Author(s):  
D. Steers ◽  
B. A. Patterson ◽  
W. Sibbett ◽  
M. J. Padgett
Keyword(s):  
Fourier Transform ◽  
Field Of View ◽  
Wide Field ◽  
Fourier Transform Spectrometer ◽  
Wide Field Of View

scholarly journals Imaging Spectroscopy on Very Large Telescopes

1984 ◽  
Vol 79 ◽  
pp. 515-517
Author(s):  
Paul Atherton
Keyword(s):  
Fourier Transform ◽  
Spatial Information ◽  
Broad Band ◽  
Imaging Spectroscopy ◽  
Wide Field ◽  
Two Dimensional ◽  
Imaging Spectrometer ◽  
Resolution Element ◽  
Fabry Perot ◽  
Large Telescopes

Imaging Spectroscopy is a technique in which a spectrum is obtained for each spatial resolution element across a wide field. The data is essentially 3-D, and may be viewed as a series of monochromatic images, or as a two dimensional array of spectra. A device generating such data may be called an imaging spectrometer. In a previous paper (Atherton, 1983 SPIE 445, 535) three different imaging spectrometers - based on grating, Fabry-Perot and Fourier Transform devices - were compared in terms of their ability to obtain spectral and spatial information over a wide field and broad band, to the same spectral resolution and S/N ratio, using the same detector array. From such a study it is clear that interferometer based devices are significantly faster than conventional grating spectrographs.

Raman Imaging of Heterogeneous Polymers: A Comparison of Global versus Point Illumination

1995 ◽  
Vol 49 (10) ◽  
pp. 1411-1430 ◽  
Author(s):  
Lars Markwort ◽  
Bert Kip ◽  
Edouard Da Silva ◽  
Bernard Roussel
Keyword(s):  
Global Illumination ◽  
Depth Resolution ◽  
Raman Imaging ◽  
Alternative Methods ◽  
Wide Field ◽  
Light Collection ◽  
Polymer Systems ◽  
Heterogeneous Polymer ◽  
Scattering Effects ◽  
Heterogeneous Polymers

Two alternative methods of Raman imaging, via global (wide-field) illumination and via point illumination in combination with confocal light collection, have been applied to the study of heterogeneous polymer systems. From the results obtained it becomes apparent that the fluorescence inherent to most polymer systems severely limits the use of global illumination. Furthermore, the lack in depth resolution in Raman imaging by global illumination ruled out this method for the study of bulk polymer samples. Also as a consequence of the absence of depth resolution, the global illumination technique appeared more vulnerable to artifacts arising from scattering effects due to the sample geometry and fluorescence. Hence, for a general application of Raman imaging to the study of polymer samples, Raman imaging by point illumination in conjunction with confocal light collection is the method of choice

Plasmonic patterned wide-field gap mode mechanism for surface enhanced Raman imaging

2016 ◽  
Vol 109 (26) ◽  
pp. 261904
Author(s):  
Houkai Chen ◽  
Luping Du ◽  
Xiaojing Wu ◽  
Siwei Zhu ◽  
Yong Yang ◽  
...  
Keyword(s):  
Raman Imaging ◽  
Wide Field ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Gap Mode

scholarly journals TSUNAMI EARLY DETECTION:ENHANCED RESOLUTION OF HF OCEANOGRAPHIC RADAR

2011 ◽  
Vol 1 (32) ◽  
pp. 4 ◽  
Author(s):  
Yasuhiro Murata ◽  
Toshiro Nagakura ◽  
Takahiro Kokai
Keyword(s):  
Fourier Transform ◽  
Surface Current ◽  
Sea Surface ◽  
Field Of View ◽  
Wide Field ◽  
Short Time Fourier Transform ◽  
Zero Padding ◽  
Wide Field Of View ◽  
Short Time ◽  
Doppler Analysis

HF Oceanographic radar is an equipment, for instantaneously sensing velocity distribution of sea surface current. It has a wide field of view, which extends approximately ±45° in direction and beyond 50km in distance. There are high expectations that the radar observation of Tsunami will become a new road path for preventing disasters. In this paper, we describe a method to enhance the resolutions of radar in both time and current. At first, resolutions required for tsunami observation are estimated by simulating a Tokachi-oki earthquake tsunami (2003). Here it is pointed out that traditional data processing indicates inadequate resolutions for tsunami early detection. Secondly, two techniques are proposed to achieve the necessary resolutions. Short-time Fourier transform (STFT), in place of normal FFT, enhances the time resolution of Doppler analysis. Further, zero-padding technique improves the current resolution, by interpolation of data within the frequency domain. Finally, by means of simulation, it is verified that these proposed techniques give improved resolutions in both time and current.

scholarly journals Imaging FTS: A Different Approach to Integral Field Spectroscopy

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Laurent Drissen ◽  
Laurie Rousseau-Nepton ◽  
Sébastien Lavoie ◽  
Carmelle Robert ◽  
Thomas Martin ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Emission Line ◽  
Absorption Line ◽  
Spiral Galaxy ◽  
Hyperspectral Imagery ◽  
Fourier Transform Spectroscopy ◽  
Wide Field ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Integral Field

Imaging Fourier transform spectroscopy (iFTS) is a promising, although technically very challenging, option for wide-field hyperspectral imagery. We present in this paper an introduction to the iFTS concept and its advantages and drawbacks, as well as examples of data obtained with a prototype iFTS, SpIOMM, attached to the 1.6 m telescope of the Observatoire du Mont-Mégantic: emission line ratios in the spiral galaxy NGC 628 and absorption line indices in the giant elliptical M87. We conclude by introducing SpIOMM's successor, SITELLE, which will be installed at the Canada-France-Hawaii Telescope in 2014.

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