Diode-laser based diagnostic to monitor water-vapor in high-pressure environments

1999 ◽  
Author(s):  
V. Nagali ◽  
J. Herbon ◽  
D. Horning ◽  
R. Bates ◽  
D. Davidson ◽  
...  
Keyword(s):  
High Pressure ◽  
Water Vapor ◽  
Diode Laser

High-pressure water vapor treatment for poly-crystalline germanium thin films

2012 ◽  
Vol 358 (17) ◽  
pp. 2107-2109 ◽  
Author(s):  
Takeru Sagisaka ◽  
Takahiro Takatsu ◽  
Masao Isomura
Keyword(s):  
Thin Films ◽  
High Pressure ◽  
Water Vapor ◽  
Pressure Water ◽  
Vapor Treatment ◽  
Crystalline Germanium

Evaluation of tunable diode laser absorption spectroscopy for in‐process water vapor mass flux measurements during freeze drying

2007 ◽  
Vol 96 (7) ◽  
pp. 1776-1793 ◽  
Author(s):  
Henning Gieseler ◽  
William J. Kessler ◽  
Michael Finson ◽  
Steven J. Davis ◽  
Phillip A. Mulhall ◽  
...  
Keyword(s):  
Water Vapor ◽  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Mass Flux ◽  
Freeze Drying ◽  
Tunable Diode Laser ◽  
Laser Absorption ◽  
Flux Measurements ◽  
Diode Laser Absorption ◽  
Vapor Mass

Synthesis and photoluminescence properties of silicon nanowires treated by high-pressure water vapor annealing

2007 ◽  
Vol 204 (5) ◽  
pp. 1302-1306 ◽  
Author(s):  
B. Salhi ◽  
B. Gelloz ◽  
N. Koshida ◽  
G. Patriarche ◽  
R. Boukherroub
Keyword(s):  
High Pressure ◽  
Water Vapor ◽  
Silicon Nanowires ◽  
Photoluminescence Properties ◽  
Vapor Annealing ◽  
Pressure Water

scholarly journals Field-deployable diode-laser-based differential absorption lidar (DIAL) for profiling water vapor

2015 ◽  
Vol 8 (3) ◽  
pp. 1073-1087 ◽  
Author(s):  
S. M. Spuler ◽  
K. S. Repasky ◽  
B. Morley ◽  
D. Moen ◽  
M. Hayman ◽  
...  
Keyword(s):  
Water Vapor ◽  
Diode Laser ◽  
Temporal Resolution ◽  
Filter Design ◽  
Wide Field ◽  
Atmospheric Conditions ◽  
Differential Absorption ◽  
Differential Absorption Lidar ◽  
Atmospheric Sciences ◽  
Range Resolution

Abstract. A field-deployable water vapor profiling instrument that builds on the foundation of the preceding generations of diode-laser-based differential absorption lidar (DIAL) laboratory prototypes was constructed and tested. Significant advances are discussed, including a unique shared telescope design that allows expansion of the outgoing beam for eye-safe operation with optomechanical and thermal stability; multistage optical filtering enabling measurement during daytime bright-cloud conditions; rapid spectral switching between the online and offline wavelengths enabling measurements during changing atmospheric conditions; and enhanced performance at lower ranges by the introduction of a new filter design and the addition of a wide field-of-view channel. Performance modeling, testing, and intercomparisons are performed and discussed. In general, the instrument has a 150 m range resolution with a 10 min temporal resolution; 1 min temporal resolution in the lowest 2 km of the atmosphere is demonstrated. The instrument is shown capable of autonomous long-term field operation – 50 days with a > 95% uptime – under a broad set of atmospheric conditions and potentially forms the basis for a ground-based network of eye-safe autonomous instruments needed for the atmospheric sciences research and forecasting communities.

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