Heterodyne detection in optical radar systems exploits the coherent mixing of a received signal with a stable local oscillator to down-convert high-frequency optical returns into easily processed ...

A research team led by Prof. Gao Xiaoming from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has improved the measurement accuracy of atmospheric greenhouse gases, ...

A research team led by Prof. Gao Xiaoming from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has developed a near-infrared dual-channel oxygen-corrected laser heterodyne ...

Terahertz heterodyne receivers are essential for enabling coherent, high-sensitivity signal detection. At room temperature, GaAs Schottky barrier diodes remain the leading technology but present ...

Trace gas sensors are used in different fields. Light-induced thermoelastic spectroscopy (LITES) has extremely high sensitivity and offers non-contact measurement, attracting extensive research ...

A research team led by professor GAO Xiaoming from Hefei Institutes of Physical Science (HFIPS) of Chinese Academy of Sciences (CAS) developed a near-infrared (NIR) dual-channel oxygen-corrected laser ...