define the stimulated absorption, spontanous emission and stimulated emission. with digram ?

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genius_generous answered 2 years ago

Explain the following terms: a)Light absorption b)Light emission c)Spontaneous emission d) Stimulated emission

Explain the following terms: (1) Spontaneous emission (2) Stimulated emission (3) Metastable state and (4) Population...

Explain the following terms: (1) Spontaneous emission (2) Stimulated emission (3) Metastable state and (4) Population inversion.

(9) When radiation interacts with a semiconductor resulting in stimulated emission, the wavelength of the output...

(9) When radiation interacts with a semiconductor resulting in stimulated emission, the wavelength of the output radiation is ( ) (A) Half the wavelength of the incident radiation (B) Two times the wavelength of the incident radiation (C) May be higher or lower than that of the incident radiation, depending on the material (D) Same as the wavelength of the incident radiation

What key spectroscopic tool is made possible by population inversion and stimulated emission? Explain.

What is fluorescence and how is it generated? explain absorption and emission

Please answer these three questions (1) In what ways are the photons emitted during stimulated emission...

Please answer these three questions (1) In what ways are the photons emitted during stimulated emission related to the incident (stimulating) photons? (2) What conditions must a collection of atoms meet in order to amplify an incident beam of light? (3) Very briefly describe how these requirements are met in a helium

What changes in the atomic structure cause the absorption and emission of photons (light)? i) Absorption...

What changes in the atomic structure cause the absorption and emission of photons (light)? i) Absorption ii) Emission

How is contribution from atomic emission distinguished from the singal for atomic absorption in atmoic absorption...

How is contribution from atomic emission distinguished from the singal for atomic absorption in atmoic absorption spectroscopy?

Spectral Absorption and Emission Consider a hydrogen atom with an electron initially in the n =...

Spectral Absorption and Emission Consider a hydrogen atom with an electron initially in the n = 4 state. a) List the 3 different wavelengths that could be observed in the emission spectrum for this atom given the electron begins in level n = 4. b) What is the longest wavelength photon that could potentially be absorbed by the electron in the level n = 4? c) How much energy would be required to ionize this atom? d) What is the...

What are the quantum mechanisms behind the emission and absorption of thermal radiation at and below...

What are the quantum mechanisms behind the emission and absorption of thermal radiation at and below room temperature? If the relevant quantum state transitions are molecular (stretching, flexing and spin changes) how come the thermal spectrum is continuous? What about substances (such as noble gases) which don't form molecules, how do they emit or absorb thermal radiation? Is there a semi-classical mechanism (with the EM field treated classically) and also a deeper explanation using the full apparatus of QFT?

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