The design of efficient infrared sensor systems using the unique properties of quantum cascade lasers (QCL) as a light source is discussed. The use of single mode distributed feedback (DFB) QCLs allows the creation of wavelength-tailored waveguides matched to the laser emission frequency. Grating structures are the ideal optical component for coupling of QCL radiation into the planar waveguide structure, as monochromatic radiation is used. An optimized waveguide platform for integrated infrared evanescent field sensing systems is provided, as both grating parameters and waveguide thickness are matched to the laser emission wavelength.
|Number of pages||2|
|Journal||Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS|
|State||Published - 2004|
|Event||2004 IEEE LEOS Annual Meeting Conference Proceedings, LEOS 2004 - Rio Grande, Puerto Rico|
Duration: 7 Nov 2004 → 11 Nov 2004