释义 |
laser heterodyne spectroscopy laser heterodyne spectroscopy[′lā·zər ¦hed·ə·rə‚dīn spek′träs·kə·pē] (spectroscopy) A high-resolution spectroscopic technique, used in astronomical and atmospheric observations, in which the signal to be measured is mixed with a laser signal in a solid-state diode, producing a difference-frequency signal in the radio-frequency range. |