3MOL: Modern Optics and Lasers
Go here for the new site:http://www2.surrey.ac.uk/physics
| Teachers' Blog | |
|---|---|
| Date | Blog |
| 3/12/04 | REVISION NOTES for the whole course, now available on-line. |
| 26/11/04 | NEXT WEEK: by popular demand (!), the lecture next week will be dedicated to revision and looking at past exam papers, rather than an exposition on quantum aspects of lasers (shame!) |
| 26/11/04 | REMINDER: NO 3MOLS tutorial on Monday (I am away on a course) |
| 26/11/04 | Some students were interested in the marks for 3MOLS module in previous years. They are show below. Average marks of 55-60% and standard deviations of 10-15% are middle of the range for all physics final years modules. |
| 25/11/04 | Lecture 18 on-line; lecture 19 (applications) on-line - this is for general interest and is not examinable |
| 22/11/04 | COURSEWORK REMINDER:any 2 of sample questions 5-9 below for marking. Hand in to Cressida by Tuesday lunchtime. |
| 19/11/04 | Sample exam questions 1-9 now online |
| 18/11/04 | Lecture 17 on-line |
| 17/11/04 | Lecture 16 revised and extended. |
| 16/11/04 | Lecture 15 now complete. |
| 12/11/04 | There are 3 extra (important) pages added to the end of Lecture 13: how to optimise the output power of a laser. |
| 12/11/04 | Lectures 1 to 16 are now online! |
| ... | .... |
|
Lecture Notes These are the latest versions, with some corrections made. If you find any further errors, please let me know! Email to j.allam@surrey.ac.uk |
|
|---|---|
| View Powerpoint Slides | Title |
| Lecture 01 | Introduction to 3MOLS |
| Lecture 02 | Laser and Photonics: a very simple introduction |
| Lecture 03 | Revision of Electromagnetism |
| Lecture 04 | Propagation in Dispersive Materials |
| Lecture 05 | Optics in Anisotropic Media |
| Lecture 06 | Linear Electro-optic Effect |
| Lecture 7/8 | Nonlinear Optics |
| Lecture 09 | Revision of "Quantum Optics" |
| Lecture 10 | Interaction of EM Radiation and Atoms |
| Lecture 11 | Optical Gain and Population Inversion |
| Lecture 12 | 2-, 3- and 4- Level Systems |
| Lecture 13 | Laser Oscillation |
| Lecture 14 | Pulsed Lasers: Gain-switching and Q-Switching |
| Lecture 15 | Spectral Line Broadening |
| Lecture 16 | Cavities, modes and mode-locking |
| Lecture 17 | Specific LASER systems |
| Lecture 18 | Properties of LASER Light: coherence and linewidth |
| Lecture 19 | Applications of LASERs |
| REVISION NOTES | A summary of what you need to memorise, what you need to recognise, key derivations, and key diagrams. |
| Sample Exam Questions | |||
|---|---|---|---|
| Sample question | Model Answer | Origin? | Topics |
| Question 1 | Answer 1 | 2003 Exam Q4 | Electroptic effect in KDP, EO modulator |
| Question 2 | Answer 2 | 2003 Exam Q3 | Phase and group velocities, dispersion in KDP |
| Question 3 |
2001 Exam Q1 (modified and extended) |
Radiative processes, Einstein's relations, and density of modes | |
| Question 4 | 2003 Exam Q1 | Radiative processes and population inversion | |
| Question 5 | Answer 5 | 2002 Exam Q1 | Optical Gain coefficient and 4-level laser |
| Question 6 | 2002 Exam Q2 | Threshold gain and cavity lifetime in ruby laser | |
| Question 7 | 2003 Exam Q2 | Cavity modes and mode-locking | |
| Question 8 | 2001 Sample Q | Gain threshold, cavity lifetime and Q-switching in Ruby laser | |
| Question 9 | Answer 9 | 2002 Exam Q3 | Birefringence, frequency doubling, phase matching angle |
Results from previous years:
|
|
2001 |
|
|
2002 |
|
|
2003 |
|
|
|
|
coursework |
exam (70%) |
overall |
coursework (30%) |
exam (70%) |
overall |
coursework (50%) |
exam (50%) |
overall |
||
|
% of marks:
|
mean |
66 |
53 |
60 |
66 |
50 |
58 |
62 |
49 |
56 |
|
max |
88 |
80 |
84 |
75 |
77 |
76 |
88 |
91 |
89 |
|
|
min |
53 |
33 |
43 |
58 |
25 |
42 |
28 |
23 |
26 |
|
|
StdDev |
11 |
15 |
13 |
6 |
14 |
10 |
13 |
22 |
17 |
|
|
% of candidates:
|
>60% |
60 |
33 |
40 |
85 |
31 |
31 |
56 |
47 |
47 |
|
<50% |
0 |
53 |
40 |
0 |
38 |
38 |
11 |
53 |
47 |
|
|
Fail |
0 |
7 |
0 |
0 |
8 |
0 |
6 |
47 |
12 |
|
