scholarly journals Wide-Field Detected Fourier Transform CARS Microscopy

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Alex Soares Duarte ◽  
Christoph Schnedermann ◽  
Philipp Kukura
Keyword(s):  
Fourier Transform ◽  
Wide Field ◽  
Cars Microscopy

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.

scholarly journals Selective imaging of saturated and unsaturated lipids by wide-field CARS-microscopy

2008 ◽  
Vol 16 (4) ◽  
pp. 2699 ◽  
Author(s):  
Christoph Heinrich ◽  
Alexander Hofer ◽  
Andreas Ritsch ◽  
Christian Ciardi ◽  
Stefan Bernet ◽  
...  
Keyword(s):  
Wide Field ◽  
Unsaturated Lipids ◽  
Cars Microscopy

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.

WIDE-FIELD CARS-MICROSCOPY

2008 ◽  
Author(s):  
CHRISTOPH HEINRICH ◽  
ALEXANDER HOFER ◽  
STEFAN BERNET ◽  
MONIKA RITSCH-MARTE
Keyword(s):  
Wide Field ◽  
Cars Microscopy

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

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.

scholarly journals On illumination schemes for wide-field CARS microscopy

2009 ◽  
Vol 17 (9) ◽  
pp. 7339 ◽  
Author(s):  
I. Toytman ◽  
D. Simanovskii ◽  
D. Palanker
Keyword(s):  
Wide Field ◽  
Cars Microscopy
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