fluorescence photon造句

• In one condition, the marker can freely be excited from ground state and returns spontaneously via emission of a fluorescence photon.
• An excitation results in the subsequent emission of a fluorescence photon, typically at a higher energy than either of the two excitatory photons.
• Within the STED microscopy ( STimulated Emission Depletion microscopy ) a fluorescent dye molecule is driven between its electronic ground state and its excited state while sending out fluorescence photons.
• Typically a vertically pulsed laser source is used for excitation and timing electronics are added between the start pulses of the laser ( start ) and the measurement of the fluorescence photons ( stop ).