Stimulated Emission Cross Section
The stimulated emission cross section (in square meters) is
where
- A21 is the Einstein A coefficient (in radians per second),
- λ is the wavelength (in meters),
- n is the refractive index of the medium (dimensionless), and
- g(ν) is the spectral line shape function (in seconds).
Read more about this topic: Stimulated Emission
Famous quotes containing the words emission, cross and/or section:
“Approximately 80% of our air pollution stems from hydrocarbons released by vegetation, so let’s not go overboard in setting and enforcing tough emission standards from man-made sources.”
—Ronald Reagan (b. 1911)
“There is the grand truth about Nathaniel Hawthorne. He says NO! in thunder; but the Devil himself cannot make him say yes. For all men who say yes, lie; and all men who say no,—why, they are in the happy condition of judicious, unincumbered travellers in Europe; they cross the frontiers into Eternity with nothing but a carpet-bag,—that is to say, the Ego. Whereas those yes-gentry, they travel with heaps of baggage, and, damn them! they will never get through the Custom House.”
—Herman Melville (1819–1891)
“That’s my problem, chaplain: I’m yellow. PFC Bernstein—plumb, fat coward. Hey, can you get a Section 8 for being yellow?”
—James Poe, U.S. screenwriter, and Based On Play. Robert Aldrich. Bernstein (Robert Strauss)