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

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.

scholarly journals Phase Modulation Homodyne Displacement Measuring Interferometer using Tunable Laser Diode as Light Source

2010 ◽  
Vol 76 (6) ◽  
pp. 673-678
Author(s):  
Masashi ISHIGE ◽  
Fumio MATSUURA ◽  
Masaaki KAWASUGI ◽  
Yuuta HOSHINO ◽  
Tuan BANH QUOC ◽  
...  
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
Phase Modulation ◽  
Tunable Laser ◽  
Tunable Laser Diode

High Power Red Laser Diode for Projector Light Source

2019 ◽  
pp. 1283
Author(s):  
Masato Hagimoto ◽  
Shintaro Miyamoto ◽  
Yuki Kimura ◽  
Haruki Fukai ◽  
Manabu Hashizume ◽  
...  
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
High Power

scholarly journals Pulsed Laser Diode-Based Desktop Photoacoustic Tomography for Monitoring Wash-In and Wash-Out of Dye in Rat Cortical Vasculature

10.3791/59764 ◽  
2019 ◽  
Author(s):  
Sandeep Kumar Kalva ◽  
Paul Kumar Upputuri ◽  
Praveenbalaji Rajendran ◽  
Rhonnie Austria Dienzo ◽  
Manojit Pramanik
Keyword(s):  
Laser Diode ◽  
Pulsed Laser ◽  
Photoacoustic Tomography

Amplitude and phase modulation of radiation in a travelling-wave amplifier based on a laser diode

2013 ◽  
Vol 43 (8) ◽  
pp. 699-705 ◽  
Author(s):  
A P Bogatov ◽  
N V D'yachkov ◽  
A E Drakin ◽  
T I Gushchik
Keyword(s):  
Laser Diode ◽  
Phase Modulation ◽  
Travelling Wave
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