One-dimensional propagation of a monochromatic light pulse in absorbing media

1974 ◽  
Vol 13 (5) ◽  
pp. 748-751
Author(s):  
E. L. Tyurin ◽  
V. A. Shcheglov
Keyword(s):  
Light Pulse ◽  
Monochromatic Light ◽  
One Dimensional ◽  
Absorbing Media

Multichannel Fourier Transform Spectroscopy Using Two-Dimensional Detection of the Interferogram and its Application to Raman Spectroscopy

1993 ◽  
Vol 47 (7) ◽  
pp. 863-868 ◽  
Author(s):  
Satoshi Takahashi ◽  
Jeung Sun Ahn ◽  
Shuji Asaka ◽  
Teizo Kitagawa
Keyword(s):  
Fourier Transform ◽  
Fringe Pattern ◽  
Principal Axis ◽  
Monochromatic Light ◽  
Fourier Transform Spectroscopy ◽  
Present System ◽  
The Novel ◽  
Two Dimensional ◽  
One Dimensional ◽  
Ccd Detector

A system for multichannel Fourier transform spectroscopy was constructed by using a CCD detector and an interferometer consisting of Savart plate held between two polarizers, and practical problems associated with its application to Raman experiments were investigated. The novel idea of the present system lies in avoiding the aliasing distortion, seen in the spectrum measured with a one-dimensional multichannel detector, by arranging the principal axis of the sensitized plane of the CCD detector so that it is not coincident with the direction of the fringe pattern of the interferogram. The observed interferogram suffered geometrical distortion due to incompleteness of the Savart plate. In order to circumvent this problem, an algorithm for correcting this distortion by referring to the interferogram of appropriate monochromatic light was successfully developed. The resolution of a Raman spectrum obtained for indene was ∼40 cm−1, in agreement with the theoretical value expected for this system.

Modified P for Correlation Transfer in One-Dimensional Scattering and Absorbing Media

2002 ◽  
Vol 16 (4) ◽  
pp. 529-536
Author(s):  
F. Dorri-Nowkoorani ◽  
R. L. Dougherty
Keyword(s):  
One Dimensional ◽  
Absorbing Media ◽  
Correlation Transfer

scholarly journals Spectral Properties of Transmission Amplitude Gratings

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Runming Pan ◽  
Chengwei Ji ◽  
Kaifeng Cao
Keyword(s):  
Mathematical Reasoning ◽  
Monochromatic Light ◽  
Specific Expression ◽  
Spectral Pattern ◽  
One Dimensional ◽  
Transmission Amplitude ◽  
Core Components ◽  
Grating Design ◽  
Important Basis ◽  
Full Consideration

The core components of the precision instruments such as spectroscope and spectrograph is grating. And one-dimensional multi-slot transmission amplitude grating is the most simple, and its basic theory is also an important basis used as reference when perform grating design, this shows the important status of transmission amplitude grating in spectroscopy study. In this paper, the theory of Fraunhofer Diffraction in optics was used in introducing the basic conclusion and spectral pattern characteristics, with the concrete experiment the spectral pattern of transmission amplitude grating in the monochromatic light and complex light is showed, then the theoretical analysis was done by mathematical reasoning and numerical simulation, the specific expression of spectral characteristic parameters in transmission amplitude was study to confirm the effects of these parameters on the produced spectral, results show that these parameters are independently. Through these studies, we understand that in the design of gratings should pay attention to the full consideration of these parameters and how to specifically improve the performance of the grating.

Measurement of the temporal delay of a light pulse through a one-dimensional photonic crystal

1999 ◽  
Vol 20 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Shamino Wang ◽  
Hernan Erlig ◽  
Harold R. Fetterman ◽  
Eli Yablonovitch ◽  
Victor Grubsky ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Light Pulse ◽  
Temporal Delay ◽  
One Dimensional ◽  
Dimensional Photonic Crystal

Contactless Deep Level Transient Spectroscopy Using Microwave Reflection

1990 ◽  
Vol 209 ◽  
Author(s):  
M. S. Wang ◽  
J. M. Borrego
Keyword(s):  
Conduction Band ◽  
Light Pulse ◽  
Deep Level Transient Spectroscopy ◽  
Gaas Substrate ◽  
Deep Level ◽  
Monochromatic Light ◽  
Hene Laser ◽  
Special Sample Preparation ◽  
Microwave Reflection ◽  
Transient Spectroscopy

ABSTRACTContactless deep level transient spectroscopy using microwave reflection at 35 GHz is presented and it is proved to be a powerful technique for characterizing trapping levels in semiconductors without the necessity of special sample preparation. The technique consists of measuring the transient decay in photoconductivity after a monochromatic light pulse has been applied to the semiconductor. The photoconductivity after the light pulse is caused by emission of carriers from trapping levels filled during the light pulse and by scanning the sample temperature it is possible to determine their activation energy. On Si-implanted layers on LEC grown SI-GaAs substrate we have detected three trapping levels, located at 0.15, 0.18 and 0.27 eV below the conduction band, by using a 1060 nm YAG laser, and one level, 0.13 eV below the conduction band, by using a 633 nm HeNe laser. The technique has been applied to LEC SI-GaAs and no trapping levels have been observed above the EL2 level.

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