1.65 µm square-FP coupled cavity semiconductor laser for methane gas detection
نویسندگان
چکیده
منابع مشابه
Intermodal Stability of a Coupled-Cavity Semiconductor Laser
We present an analysis of the steady-state operation of a two-element coupled-cavity laser near a mode hop. The equations of motion for the two cavities and two relevant modes of a longitudinally coupled-cavity laser are reduced to a system of nondimensional nonlinear ordinary differential equations which describe a general two-element laser. The equations are then solved and the stability of t...
متن کاملUltralow noise miniature external cavity semiconductor laser
Advanced applications in optical metrology demand improved lasers with high spectral purity, in form factors that are small and insensitive to environmental perturbations. While laboratory-scale lasers with extraordinarily high stability and low noise have been reported, all-integrated chip-scale devices with sub-100 Hz linewidth have not been previously demonstrated. Lasers integrated with opt...
متن کاملSemiconductor Gas Sensors Based on Pd/SnO2 Nanomaterials for Methane Detection in Air
Semiconductor sensors based on nanosized Pd-containing tin dioxide have been obtained by a sol-gel technique. Semiconductor gas-sensitive materials were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD) methods. Influence of Pd additives on sensitivity of the sensors to methane has been studied. Temperature dependences of electrical resistance in air and sensor...
متن کاملDisplacement and Deflection Sensitivity of Gas-coupled Laser Acoustic Detection
Ultrasound radiated from a surface can change the path of an optical beam, directed through the acoustic field and parallel to the surface, through acousto-optic interaction. Sensing of the beam motion with a position-sensitive detector produces a simple but effective non-contact ultrasound detector, designated Gas-coupled Laser Acoustic Detection, or GCLAD. Recent research has shown that the r...
متن کاملBiomedical Photoacoustic Imaging Using Gas-coupled Laser Acoustic Detection
Several detection methods have been explored for photoacoustic and ultrasound imaging of biological tissues. Piezoelectric transducers are commonly used, which require contact with the sample and have limiting bandwidth characteristics. Interferometry detection exhibits improved bandwidth characteristics and resolution, yet generally require complicated optics and the incorporation of a contact...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chinese Optics Letters
سال: 2022
ISSN: ['1671-7694']
DOI: https://doi.org/10.3788/col202220.061401