QC Laser

1
Development of a pulsed quantum cascade laser
based CO sensor using advanced signal processing
techniques
Rice Quantum Institute, Rice University, Houston
Texas CLEO 2005 22-27 May 2005, Baltimore, MD,
USA
Stephen G. So, Gerard Wysocki, Damien Weidmann,
J. Patrick Frantz, and Frank K. Tittel
steveso_at_rice.edu
http//www.ece.rice.edu/lasersci/

• Urban and Industrial Emission Measurements
• Industrial Plants
• Combustion Sources and Processes
• Automobile
• Rural Emission Measurements
• Agriculture
• Environmental Monitoring
• Atmospheric Chemistry
• Volcanic Emissions
• Chemical Analysis and Industrial Process Control
• Chemical, Pharmaceutical, Semiconductor
  Industry
• Spacecraft and Planetary Surface Monitoring
• Crew Health Maintenance Life Support
• Medical Applications
• Fundamental Science and Photochemistry

System Specifications Autonomous Electronics
Results Detection Limits, Signal Processing,
and Repeatability
Applications for Trace Gas Sensing
QC Laser Housing
CO Monitoring in Laboratory Air
Concentration ppb
Sensor Architecture Electronics and Optics
Time pm
Sample Beam
Reference Beam
MCT Infrared Detector
MPC
M
Future Work Integrated QEPAS Handheld
4.6 mm QCL Spectral Tuning Range
M
PM
L
R7
R8
R9
Bluetooth Module (or 802.15.4 for sensor
networking)
Laser Diode Control IC NEL Japan
M
BS
QCL
MPC 100m Multipass Herriott Cell MCT Mercury
Cadmium Telluride M Mirror L Lens PM Off
Axis Parabolic Mirror BS Beam Splitter QCL
Quantum Cascade Laser
Digital Control Signals
Analog Signals
TI MSP430
Analog Signals
2171 cm-1 2181 cm-1
Optical Signals
Telecom Laser
Quartz TF