By considering the rate equations for a simple 2-level laser system: ƏN, ƏN₂ dt dt 12=-B₁₂p(v)N₁ + B₂P(V)N₂ + A₂N₂ show that the absorption/gain co-efficient is given by the expression: a(v.) = [n, -n₂]0₂, (v.) State any assumptions made and define the meaning of all symbols used.
By considering the rate equations for a simple 2-level laser system: ƏN, ƏN₂ dt dt 12=-B₁₂p(v)N₁ + B₂P(V)N₂ + A₂N₂ show that the absorption/gain co-efficient is given by the expression: a(v.) = [n, -n₂]0₂, (v.) State any assumptions made and define the meaning of all symbols used.
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![By considering the rate equations for a simple 2-level laser system:
ƏN,
ƏN₂
dt
dt
-=-B₁₂p(v)N₁ + B₂p(v)N₂ + A₂N₂
show that the absorption/gain co-efficient is given by the expression:
a(v.) = [n, -n₂]o (v.)
State any assumptions made and define the meaning of all symbols used.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd1e65d3f-3c77-4e7f-88fc-bf17213b1ce1%2F08bf8228-8474-4cbd-8aed-d7745cde09b5%2Fwdxwdhc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:By considering the rate equations for a simple 2-level laser system:
ƏN,
ƏN₂
dt
dt
-=-B₁₂p(v)N₁ + B₂p(v)N₂ + A₂N₂
show that the absorption/gain co-efficient is given by the expression:
a(v.) = [n, -n₂]o (v.)
State any assumptions made and define the meaning of all symbols used.
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