Once the active medium is excited, the first photons of light are produced by which physical process?
A. Blackbody radiation
B. Spontaneous emission
C. Synchrotron radiation
D. Planck’s oscillation
Answer:B
Once the active medium is excited, the first photons of light are produced by which physical process?
A. Blackbody radiation B. Spontaneous emission C. Synchrotron radiation D. Planck’s oscillation