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| 1. |
The active medium in a particular laser that generates laser light at a wavelength of 694 nm is 6.00 cm long and 1.00 cm in diameter. (a) Treat the medium as an optical resonance cavity analogous to a closed organ pipe. How many standingwave nodes are there along the laser axis? (b) By what amount Deltaf would the beam frequency have to shift to increase of the travel by one? (c ) Show that Deltaf is just the inverse of the travel time of laser light for one round trip back and forth along the laser axis. (d) What is the corresponding fractional frequency shift Deltaf//f? The appropriate index of refraction of the lasing medium (a ruby crystal) is 1.75. |
| Answer» SOLUTION :(a) `3.03xx10^(5)`, (B) `1.43xx10^(9)HZ`, (d) `3.31xx10^(-6)` | |