Division of Theoretical Chemistry& Biology
Lecture 4 Atomic rate equations
The rabi frequency
Quan Miao
Division of Theoretical Chemistry & Biology, KTH
E-mail: qmiao@theochem.kth.se
Chapter 4 Atomic rate equations
pumping and population inversion
popul
Wave Optics and Gaussian Beams
+
Physical Properties of Gaussian
Beams
Laserphysics Course
June 1, 2011
Introduction
Before: ray optics
Now: also diffraction and thus wave nature of
light is taken into account
But:
no disperion
homogenous medium
iso
Task 3
Laser Physics (Siegman), Chapter 4,5
Solutions have to be handed in by 4th May.
Questions and submission of solutions: qmiao@theochem.kth.se
1. Thermal equilibration in a two-level atomic system: purely radiative
case.
Suppose a collection of two-l
Homework 5 Chapter 8 - 9
Hand in by May 18 to
patrik.rugeland@acreo.se
1. Sensitivity of pulse compression to disperser length.
A chirped Gaussian pulse whose initial time-bandwidth product is N times the transformlimited value, where N > 1, is to be comp
Task 10
pz@laserphysics.kth.se
1 Diraction free beams
With the presented understanding of diraction it is straight forward to construct socalled diraction free beams, i.e. beams that do not change their amplitude distribution
during propagation. What does
Task 12
Laser physics-Chapter 21, 22, xingang@kth.se
th
Please hand in the solutions by 6 of July.
1. Inserting a weak gaussian aperture into an arbitrary ring resonator. A multi-element
paraxial ring optical resonator with all real ABCD elements is "cut
Presentation in Laser Physics Course
(Siegman)
Sara Rydberg
May 25, 2011
Chapter 14: Optical Beams and Resonators: An Introduction
Chapter 15: Ray Optics and Ray Matrices
Presentation in Laser Physics Course (Siegman)
1 / 48
Presentation Outline
Optical b
Task 11
Laser physics-Chapter 19, 20, yxiang@kth.se
Please hand in the solutions by 29th of June.
1. Spot size adjustments in a near-hemispherical resonator. An He-Ne
632.8nm gas laser nominally 1m long is to be designed with a
hemispherical cavity, i.e.,
Task 9
Homework on chapter 14 and 15, Laser Physics course (Siegman)
Please send solutions to sara.rydberg@miun.se before 16th of june.
1
Ray propagation through a thick lens
Derive the thick lens expression,
1
1
1
=
+
,
2 L2
1 L1 1/C
R
R
where R1 and R
Laser Physics Course
Laser Pumping and Population Inversion
Laser Amplification
Daniel Lopez
2011-04-20
Laser Pumping and
Population inversion
26/04/2011
2
Example of multienergy-level system
Important pump bands and
the dominant 1.06 m laser
transition
Task 4
Laser Physics Course, Chapter 6,7
The tasks have to be handed in by 11th May
Questions, comments and submission of solutions: Daniel.Lopez@acreo.se
1.- Four-level population inversion
In the four-level laser system, the population inversion versus
Task2LaserPhysics(Siegman),Chapter3
Solutiontobehandedinby27thofApril.
Questionsandsubmissionofsolutions:ml@laserphysics.kth.se
1) Midband absorption versus pressure in a gas.
Why does the midband absorption value shown in Figure 3.20 at first increase wi
Task 6 hj@laserphysics.kth.se
1. Numerical calculation: A Gaussian pulse of duration 1ps
(FWHM) is incident on the infinitely long absorbing
medium that has a relaxation time of 1ps. The initial
input pulse fluence was the same as the saturation
fluence o
Task 1
Laser Physics (Siegman), Chapter 2
The tasks have to be handed in by 27th April
If you have any questions: mmanzo@laserphysics.kth.se
1) Classical derivation of the radiative decay rate. The time-averaged rate (averaged over a
few cycles) at which
Real gain media
Multiple energy levels
Line broadening
Polarisation properties
Laser Physics, Lecture 3 Martin Levenius 2011-04-06
1
Agenda
Introduction adapting theCEOmodel to
realatoms
Oscillatorstrength
Homogeneous line broadening
Inhomogeneous lin
Laser Physics course
Stimulated transitions: the Classical
Oscillation Model
Lecture #2 (Chapter 2)
Michele Manzo
March 30th 2011
Laser Physics and Optical Materials, Dep. Of Applied Physics, KTH
1
List of contents
Introduction to previous episode
The Cla