Self-modulation of radiation in ruby lasers with two resonators coupled through an electrooptical shutter

1988 ◽  
Vol 48 (6) ◽  
pp. 589-593
Author(s):  
V. A. Pilipovich ◽  
A. A. Kovalev ◽  
L. V. Levashkevich
Keyword(s):  
Electrooptical Shutter

Electrooptical shutter for a ruby laser with a low control voltage

1970 ◽  
Vol 13 (5) ◽  
pp. 1449-1451
Author(s):  
B. B. Boiko ◽  
N. S. Petrov ◽  
V. A. Krivosheev ◽  
V. E. Leparskii
Keyword(s):  
Ruby Laser ◽  
Control Voltage ◽  
Electrooptical Shutter

Radiation dynamics of a ring laser with an electrooptical shutter

1980 ◽  
Vol 32 (3) ◽  
pp. 241-245
Author(s):  
A. A. Kovalev ◽  
B. N. Tyushkevich ◽  
V. N. Sadovskii ◽  
N. A. Usova
Keyword(s):  
Ring Laser ◽  
Electrooptical Shutter

Activity of Primate V1 Cortical Neurons During Blinks

2000 ◽  
Vol 84 (5) ◽  
pp. 2691-2694 ◽  
Author(s):  
Timothy J. Gawne ◽  
Julie M. Martin
Keyword(s):  
Neuronal Activity ◽  
Visual Stimulus ◽  
Cortical Neurons ◽  
Cortical Area ◽  
Constant Stimulus ◽  
V1 Neurons ◽  
Reflex Blink ◽  
Visual Cortical Area ◽  
Electrooptical Shutter ◽  
Visual Cortical

Every time we blink our eyes, the image on the retina goes almost completely dark. And yet we hardly notice these interruptions, even though an external darkening is startling. Intuitively it would seem that if our perception is continuous, then the neuronal activity on which our perceptions are based should also be continuous. To explore this issue, we compared the responses of 63 supragranular V1 neurons recorded from two awake monkeys for four conditions: 1) constant stimulus, 2) during a reflex blink, 3) during a gap in the visual stimulus, and 4) during an external darkening when an electrooptical shutter occluded the entire scene. We show here that the activity of neurons in visual cortical area V1 is essentially shut off during a blink. In the 100-ms epoch starting 70 ms after the stimulus was interrupted, the firing rate was 27.2 ± 2.7 spikes/s (SE) for a constant stimulus, 8.2 ± 0.9 spikes/s for a reflex blink, 17.3 ± 1.9 spikes/s for a gap, and 12.7 ± 1.4 spikes/s for an external darkening. The responses during a blink are less than during an external darkening ( P < 0.05, t-test). However, many of these neurons responded with a transient burst of activity to the onset of an external darkening and not to a blink, suggesting that it is the suppression of this transient which causes us to ignore blinks. This is consistent with other studies where the presence of transient bursts of activity correlates with the perceived visibility of a stimulus.

Narrowing of emission spectrum in a laser with an electrooptical shutter

1979 ◽  
Vol 30 (4) ◽  
pp. 446-452 ◽  
Author(s):  
A. A. Kovalev ◽  
N. I. Kabaev ◽  
B. N. Tyushkevich ◽  
V. A. Yurevich
Keyword(s):  
Emission Spectrum ◽  
Electrooptical Shutter

Dynamics of ultrashort pulse formation in a ruby laser with a passively switched electrooptical shutter

1986 ◽  
Vol 44 (6) ◽  
pp. 602-607
Author(s):  
V. A. Pilipovich ◽  
A. A. Kovalev ◽  
L. V. Levashkevich
Keyword(s):  
Ultrashort Pulse ◽  
Ruby Laser ◽  
Electrooptical Shutter ◽  
Pulse Formation

scholarly journals GW-level high-power CO2 laser system

1992 ◽  
Vol 10 (3) ◽  
pp. 413-419 ◽  
Author(s):  
Zhuang Guoliang ◽  
Yu. Shusheng ◽  
Niu Wanqing ◽  
Du Longlong ◽  
Li Mingfu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
High Power ◽  
Pulse Width ◽  
Laser System ◽  
Pockels Cell ◽  
Laser Output Power ◽  
Full Width ◽  
Half Maximum ◽  
Laser Oscillator ◽  
Electrooptical Shutter

A Gw-level high-power CO2 laser system has been developed. A short laser pulse is cut out with a double Pockels cell electrooptical shutter from a hybrid CO2 laser oscillator and amplified with a three-stage dual-path TEA preamplifier, a two-stage TEA preamplifier, a large aperture TEA amplifier, and an electron beam-controlled final amplifier. All parts of the laser system are controlled with a control system. The laser output power is up to 3.2 × 109 W and laser pulse width is 4 ns full width at half maximum.

The Electrooptical Shutter—its Theory and Technique

1931 ◽  
Vol 38 (8) ◽  
pp. 1506-1534 ◽  
Author(s):  
Frank G. Dunnington
Keyword(s):  
Electrooptical Shutter
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