Spectrally resolved cavity ring down measurement of high reflectivity mirrors using a supercontinuum laser source

2009 ◽  
Vol 48 (35) ◽  
pp. 6754 ◽  
Author(s):  
Gabriele Schmidl ◽  
Wolfgang Paa ◽  
Wolfgang Triebel ◽  
Stefan Schippel ◽  
Hartmut Heyer
Keyword(s):  
Laser Source ◽  
High Reflectivity ◽  
Supercontinuum Laser ◽  
Spectrally Resolved ◽  
Cavity Ring Down

Novel, real-time measurements of VOCs using a Cavity Ring-Down Spectrometer (CRDS)

2020 ◽  
Author(s):  
Gregor Lucic ◽  
Chris Rella ◽  
John Hoffnagle ◽  
Kai Skog ◽  
Laurie McHale
Keyword(s):  
Air Quality ◽  
Weather Data ◽  
Laser Source ◽  
Hazardous Air Pollutants ◽  
Source Attribution ◽  
Mass Spectrometers ◽  
Community Monitoring ◽  
Initial Work ◽  
Simple Molecules ◽  
Cavity Ring Down

<p>Measurements of volatile organic compounds (VOCs) are important in a wide variety of scientific disciplines, including air quality, biogeochemistry, hydrology, plant and animal physiology, human health, and petrochemistry. Generally, these measurements are performed with expensive laboratory-based mass spectrometers, slow gas chromatographs, non-speciated flame- or photo-ionization detectors, or insensitive Fourier transform infrared spectrometers. Laser-based spectrometers based upon cavity enhanced techniques like cavity ring-down spectroscopy (CRDS) would in principle provide significant advantages over these methods in sensitivity, speed of response, simplicity, stability, and portability, as has been demonstrated in the last decade for the quantification of simple molecules like carbon dioxide, methane, or ammonia.  However, the majority of these instruments are based upon narrowly tunable lasers.  These lasers cannot tune across the broad spectral features, characteristic of VOCs.  In this paper we present a novel CRDS instrument based upon a broadband laser source that can in principle span more than hundred nanometers.  We show early measurements of ethylene oxide and BTEX (benzene, toluene, ethylbenzene, and xylene) at parts per billion and even parts per trillion levels.  Though our initial work has focused on measurements of hazardous air pollutants, there is future potential for speciated detection of other VOCs as well as greenhouse gases. These systems can be deployed on a bench-top and/or vehicle, and with per-second measurement intervals, are ideal for correlation with weather data for accurate source attribution. The analyzers are being developed to meet indoor and outdoor air quality requirements and may be deployed near sources (stack or fenceline monitoring) or far from sources (community monitoring). </p>

scholarly journals STED microscopy with a supercontinuum laser source

2008 ◽  
Vol 16 (13) ◽  
pp. 9614 ◽  
Author(s):  
Dominik Wildanger ◽  
Eva Rittweger ◽  
Lars Kastrup ◽  
Stefan W. Hell
Keyword(s):  
Laser Source ◽  
Sted Microscopy ◽  
Supercontinuum Laser

All-Fiber Tunable Supercontinuum Laser Source

2015 ◽  
Vol 27 (14) ◽  
pp. 1553-1556 ◽  
Author(s):  
Jing Gao ◽  
Guanghui Yang ◽  
Xin Zou ◽  
Ming Li ◽  
Tingwu Ge ◽  
...  
Keyword(s):  
Laser Source ◽  
Supercontinuum Laser

scholarly journals Two-channel Hyperspectral LiDAR with a Supercontinuum Laser Source

Sensors ◽  
2010 ◽  
Vol 10 (7) ◽  
pp. 7057-7066 ◽  
Author(s):  
Yuwei Chen ◽  
Esa Räikkönen ◽  
Sanna Kaasalainen ◽  
Juha Suomalainen ◽  
Teemu Hakala ◽  
...  
Keyword(s):  
Laser Source ◽  
Supercontinuum Laser

Adjustable supercontinuum laser source with low coherence length and low timing jitter

2010 ◽  
Author(s):  
Marco Andreana ◽  
Anthony Bertrand ◽  
Yves Hernandez ◽  
Philippe Leproux ◽  
Vincent Couderc ◽  
...  
Keyword(s):  
Coherence Length ◽  
Timing Jitter ◽  
Laser Source ◽  
Low Coherence ◽  
Supercontinuum Laser

High-Power All-Fiber Mid-Infrared Supercontinuum Laser Source

2014 ◽  
Vol 41 (9) ◽  
pp. 0902004
Author(s):  
刘江 Liu Jiang ◽  
刘昆 Liu Kun ◽  
师红星 Shi Hongxing ◽  
谭方舟 Tan Fangzhou ◽  
王璞 Wang Pu
Keyword(s):  
High Power ◽  
Laser Source ◽  
Mid Infrared ◽  
Supercontinuum Laser

All Fiberized Supercontinuum Laser Source Based on “Figure of Eight” Cavity Modelocked Yb Fiber Laser

2013 ◽  
Vol 42 (5) ◽  
pp. 521-525
Author(s):  
钱凯 QIAN Kai ◽  
魏凯华 WEI Kaihua ◽  
陈滔 CHEN Tao ◽  
姜培培 JIANG Peipei ◽  
蔡双双 CAI Shuangshuang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Cavity Mode ◽  
Laser Source ◽  
Supercontinuum Laser
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