Unit 2: Lasers (AI 🤖) Flashcards
What is the formula for round-trip reduction factor?
Round - trip reduction factor = I(a) R, x R. X LA / I(o)
This formula relates to the intensity and reduction factors in a specific context.
What does I(c) equal in the provided equations?
I(c) = I(2)
Indicates a relationship between intensity values.
What is the expression for the change in N over time?
dN/dt = - dNa = - Ba N, U(2)
This equation describes the rate of change of N and its relationship with other variables.
What does the gain coefficient Y represent?
Y = Ba DA (A N, - N)
Represents how gain is influenced by certain parameters.
What condition is described by K N, > 9, N,?
A condition for gain or amplification
Indicates a threshold for gain in the context of the equations.
What is the fundamental family density formula?
Fundamental family density = 5 (0) x N, E pp. diff, hithem
Relates to density in a specific scientific context.
What are the levels of amplification mentioned?
Amplification level 1 and 2
Refers to different stages or levels of amplification in a system.
What process is indicated by stimulated emission?
Stimulated emission is a process in which an incoming photon stimulates an excited atom to emit a photon
A key concept in quantum mechanics and laser physics.
What does the notation (n) Ba, ba refer to?
It likely refers to specific parameters or coefficients in the context of the equations
The exact meaning may depend on additional context.
What is the relationship expressed by A7 = 1?
A7 = 1 indicates a specific condition or normalization in the system
This could represent a balance or equilibrium in a certain context.
What does Isp represent in the equations?
Isp is likely a specific intensity or parameter in the context of the equations
The precise definition would depend on the broader context of the equations.
What is the term for the ratio of stimulated emission to absorption in lasers?
Ratio de Spar
This ratio is important for understanding laser operation and efficiency.
What does ‘Temporal coherence’ refer to in the context of lasers?
The property of a laser that describes the phase relationship of the light wave over time
Temporal coherence is crucial for applications requiring precise control of light.
Fill in the blank: The maximum width of a laser beam is referred to as _______.
Chernee-length
What is the symbol for the pump rate in laser systems?
Pump Rate symbol is N
In laser physics, what does the variable ‘u’ typically represent?
u(x) = 0: N, = TRO
What is the equation relating gain to the number of atoms in an excited state?
dN/dt = R - Na
This equation describes the change in the number of excited atoms over time.
What does the term ‘Stim. Em.’ refer to in laser terminology?
Stimulated Emission
True or False: The coherence of a laser light is independent of the laser cavity length.
False
What is the relationship between ‘EIS’ and laser operation?
EIS refers to the energy input/output in laser systems.
Fill in the blank: In laser systems, the maximum gain is denoted by _______.
Tincaladelgain
What does ‘Pep. dens.’ stand for in the context of lasers?
Population density of excited states
