Pulsed Laser Diode for Use as a Light Source for Short-Exposure, High-Frame-Rate Flow Visualization

2015 ◽  
Author(s):  
Nick J. Parziale ◽  
Bryan E. Schmidt ◽  
Patrick Wang ◽  
Hans Hornung ◽  
Joseph Shepherd
Keyword(s):  
Flow Visualization ◽  
Light Source ◽  
Laser Diode ◽  
Pulsed Laser ◽  
Frame Rate ◽  
Short Exposure ◽  
High Frame Rate

scholarly journals Intracardiac flow visualization using high‐frame rate blood speckle tracking echocardiography: Illustrations from infants with congenital heart disease

2021 ◽  
Vol 38 (4) ◽  
pp. 707-715
Author(s):  
Massimiliano Cantinotti ◽  
Pietro Marchese ◽  
Martin Koestenberger ◽  
Raffaele Giordano ◽  
Giuseppe Santoro ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
Flow Visualization ◽  
Speckle Tracking ◽  
Congenital Heart ◽  
Speckle Tracking Echocardiography ◽  
Frame Rate ◽  
High Frame Rate ◽  
Intracardiac Flow

Optical Distance Meter Using a Pulsed Laser Diode and Fast Avalanche Photo Diodes for Measurements of Molten Steel Levels

1996 ◽  
Vol 118 (4) ◽  
pp. 800-803 ◽  
Author(s):  
Tsutomu Araki ◽  
Haruhiko Yoshida
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
Molten Steel ◽  
Dynamic Range ◽  
Pulsed Laser ◽  
Casting Process ◽  
Measurement Range ◽  
Steel Mold ◽  
Optical Distance ◽  
Fast Rise

An optical distance meter with a wide dynamic range, is proposed for measuring the level of molten steel in a steel mold. The meter operates by measuring the flight time of a short optical pulse that is propagated between the light source and the target. A pulsed laser diode with a fast rise time is utilized as a light source, and two avalanche photo-diodes are used as detectors. The optical distance meter performs at a measurement range and a standard deviation of the measurement error of 1 m and 1 mm for the black paper target, respectively. To test its reliability, the distance meter is used to monitor the level of molten steel during a continuous casting process. The results obtained were compared with those obtained using an eddy current sensor and a γ-ray sensor. The measurement range of the optical method is ten times those attained using other two sensors. Continuous monitoring of the steel level can be done from the initiation of the casting process with the proposed distance meter.

High frame rate photoacoustic imaging using multiple wave-length LED array light source

2016 ◽  
Author(s):  
Toshitaka Agano ◽  
Naoto Sato ◽  
Hitoshi Nakatsuka ◽  
Kazuo Kitagawa ◽  
Takamitsu Hanaoka ◽  
...  
Keyword(s):  
Light Source ◽  
Photoacoustic Imaging ◽  
Wave Length ◽  
Frame Rate ◽  
Multiple Wave ◽  
High Frame Rate ◽  
Led Array

High Frame Rate Flow Visualization and LDV Measurements in a Steady Flow Cylinder Head Assembly

1991 ◽  
Author(s):  
H. Schock ◽  
F. Hamady ◽  
M. DeFilippis ◽  
T. Stuecken ◽  
C. Gendrich ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Steady Flow ◽  
Cylinder Head ◽  
Frame Rate ◽  
High Frame Rate ◽  
Head Assembly

Phase‐modulation fluorometry using a frequency‐doubled pulsed laser diode light source

1990 ◽  
Vol 61 (7) ◽  
pp. 1816-1820 ◽  
Author(s):  
Klaus W. Berndt ◽  
Ignacy Gryczynski ◽  
Joseph R. Lakowicz
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
Phase Modulation ◽  
Pulsed Laser

Measurement of regional pulse wave velocity using very high frame rate ultrasound

Choonpa Igaku ◽  
2015 ◽  
Vol 42 (6) ◽  
pp. 701-709
Author(s):  
Hideyuki HASEGAWA ◽  
Kazue HONGO ◽  
Hiroshi KANAI
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Frame Rate ◽  
High Frame Rate ◽  
Very High
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