1. 1.5 Population inversion and laser operation
gain
losses
Condition of operation:

2. 1.6 Interaction of light and matter
IR, VIS, UV: OK
X-rays: not OK
Dipole approximation valid when:
Electric dipole moment
Magnetic dipole interaction

3. 1.7 Coherent excitation of a two-level system
TDSE:
Time-dependent Hamiltonian:
Using the molecular eigenstates
as a basis,
one obtains a matrix equation:
Remember:

4. Rabi oscillations
|2>
|1>

5. Atomic orbitals

6. Emission spectroscopy of the hydrogen atom

7. Emission spectrum of the hydrogen atom