Excitation mechanisms responsible for the 615.0‐nm oscillation in a He‐Hg ion laser

1981 ◽  
Vol 52 (4) ◽  
pp. 2699-2704 ◽  
Author(s):  
Shiro Horiguchi
1971 ◽  
Vol 19 (4) ◽  
pp. 122-122 ◽  
Author(s):  
G. J. Collins ◽  
R. C. Jensen ◽  
W. R. Bennett

1971 ◽  
Vol 18 (7) ◽  
pp. 282-284 ◽  
Author(s):  
G.J. Collins ◽  
R.C. Jensen ◽  
W.R. Bennett

Author(s):  
P.M. Houpt ◽  
A. Draaijer

In confocal microscopy, the object is scanned by the coinciding focal points (confocal) of a point light source and a point detector both focused on a certain plane in the object. Only light coming from the focal point is detected and, even more important, out-of-focus light is rejected.This makes it possible to slice up optically the ‘volume of interest’ in the object by moving it axially while scanning the focused point light source (X-Y) laterally. The successive confocal sections can be stored in a computer and used to reconstruct the object in a 3D image display.The instrument described is able to scan the object laterally with an Ar ion laser (488 nm) at video rates. The image of one confocal section of an object can be displayed within 40 milliseconds (1000 х 1000 pixels). The time to record the total information within the ‘volume of interest’ normally depends on the number of slices needed to cover it, but rarely exceeds a few seconds.


1993 ◽  
Vol 21 (1) ◽  
pp. 35-37
Author(s):  
TADASHI TAKAHASHI
Keyword(s):  
Rare Gas ◽  

2017 ◽  
Vol 26 (02) ◽  
pp. 1750025 ◽  
Author(s):  
M. K. Biswas ◽  
P. K. Das ◽  
E. Hoque ◽  
S. M. Sharafuddin ◽  
S. K. Das ◽  
...  

The present work studies the optical nonlinearity exhibited by the material (for Continuous Wave (CW) laser or long pulse) due to the change in thermal properties of the material on illumination. Thermal lens (TL) technique has been used to measure the refractive index change due to the formation of TL along with other thermo-optic properties of the material in solution. A CW Ar-ion laser has been used as light source and the laser beam was chopped at 25[Formula: see text]Hz frequency to obtain 12[Formula: see text]ms pulse to observe the formation of the TL within the sample. The [Formula: see text] value have been calculated by the TL technique for Benzene, Toluene and Dimethylaniline (DMA) in toluene and Benzene. The [Formula: see text] value is found to be in the order of 10[Formula: see text] to 10[Formula: see text][Formula: see text]cm2[Formula: see text]W[Formula: see text].


2021 ◽  
pp. 2000528
Author(s):  
Xavier Zambrana‐Puyalto ◽  
Davide D'Ambrosio ◽  
Gianluca Gagliardi

1981 ◽  
Vol 26 (3) ◽  
pp. 509-515 ◽  
Author(s):  
V. M. Čadež ◽  
S. Vuković ◽  
V. V. Frolov ◽  
A. Yu. Kyrie

Generation of electromagnetic surface waves by relativistic inhomogeneous particle flows is investigated for plane and cylindrical geometries. The basic excitation mechanisms are shown to be the induced anomalous Doppler effect and the hydrodynamic Čerenkov effect. The relevant maximal growth rates may differ significantly from those derived for monoenergetic beams.


1976 ◽  
Vol 25 (1) ◽  
pp. 833-835
Author(s):  
G. N. Alferov ◽  
V. I. Donin ◽  
B. Ya. Yurshin

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