Unit 2: Lasers

Question 1

Round-trip reduction factor

Answer 1

Question 2

Stimulated Emission Rate

Answer 2

Question 3

Absorption Rate

Answer 3

Question 4

Photon Number Rate (Reduction Rate)

Question 5

Gain Coefficient

Answer 5

Question 6

For the gain coefficient equation, if … what do we have?

Answer 6

Question 7

Fundamental form of gain coefficient equation

Answer 7

Question 8

Emission Cross-Section

Answer 8

Question 9

Stimulated Emission Rate in terms of “A” Einstein Coefficient

Answer 9

Question 10

“A” Einstein Coefficient relation to Spontaneous Emission Time constant and “B” Einstein Coefficient
- Equation string

Answer 10

Question 11

Ratio of Spontaneous to Stimulated Emission
- Equation String

Answer 11

Question 12

Temporal coherence of a light source
(Coherence time constant)

Answer 12

Question 13

Coherence Length

Answer 13

Question 14

Key laser equation

Answer 14

Question 15

Steady State Condition

Answer 15

Question 16

For Key Laser Equation:
- with no photons in the cavity

Answer 16

Question 17

Reminder:

Answer 17

(Don’t know how to format this derivation)

Question 18

Threshold gain requirement

Answer 18

Question 19

Optical Path Length

Answer 19

Question 20

Frequencies
- “counting integer” p

Answer 20

Question 21

Separation of Nodes

Answer 21

Question 22

Answer 22

Question 23

Answer 23

Question 24

Quality factor of cavity, Q

Answer 24

Question 25

Resonant width of cavity

Answer 25

Question 26

Answer 26

Question 27

Answer 27

Question 28

Lineshape function

Answer 28

Question 30

Standard Deviation

Answer 30

Question 31

FWHM

Answer 31

Question 32

Answer 32

Question 33

Answer 33