I posted a question about Rabi frequency here https://www.physicsforums.com/threads/what-is-rabi-frequency.331082/ some times ago. The replies there answer some of my questions but I am still looking for detail explanation on the relation between Rabi frequency and the power of the beam. I read some more materials online. There I understand that if I have a 2 level system where the Rabi frequency is a constant if the input laser is of constant power. I am thinking if we shine that laser beam (as pulse with duration ##\Delta t##) to the system. How can we figure out the power of the laser if we know Rabi frequency ?(adsbygoogle = window.adsbygoogle || []).push({});

I am thinking ##\hbar \Omega## is of the unit of energy so is the power of laser should be ##\hbar\Omega/\Delta t## if ##\Delta t## is the duration of the pulse? Someone said this is not correct because if depends on how much the frequency of laser off from the resonance frequency also. But how do we add that and get the correct expression for power?

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# How to estimate the power of laser beam

Loading...

Similar Threads - estimate power laser | Date |
---|---|

I Cosmological constant estimation in QFT | May 30, 2017 |

I Blue lights (LEDs) consume more power than red (and green)? | Sep 8, 2016 |

Seeking opinion of others on quantum systems control and estimation theory | Sep 30, 2014 |

Adiabatic approxmation, estimate of d\phi/dx | Jun 16, 2011 |

Estimating size of loop integrals | Jun 22, 2010 |

**Physics Forums - The Fusion of Science and Community**