Course Info | Class Notes | Evaluation / Check Marks | Labs | Class Schedule & Homework |
In this course, students will mathematically model laser systems. Specific topics include the development of rate equations in the presence of laser radiation, development of models to predict the development of population inversion (& hence gain) and output power in both pulsed and CW lasers, and determination of optimal laser parameters (such as output coupling, Q-switch delay, etc) for various laser systems. Many models will use numerical methods and will utilize spreadsheets. As well as a large theoretical component, this course includes a substantial lab component through which students can examine application of, and prove, various models developed in the course on a variety of lasers.
This course is offered as part of the Photonics Engineering Technology (3 year) Program at Niagara College.
Course policies follow the Standardized Policies and Procedures for CEE (dated January 2011). In summary:
Complete course policies can be found in the Teaching and Learning Plan (T&LP) document found on Blackboard.
Homework & Class Schedule
There are four labs in this course. Lab sessions are two-hours in length.
In line with departmental policies, the lab portion of this course MUST be passed SEPARATELY from the theory portion in order to pass this course. Late labs result in an immediate mark of ZERO with no exceptions and no excuses accepted (including the now infamous "my printer ran out of ink" and "my computer died"). Failure to submit a lab (and a late lab is considered failed and will receive a mark of zero) will result in the student being placed on course condition. Failure to submit a second lab results in immediate EXPULSION from the course.
Lab 1: Lasing threshold of a Solid-State Laser
The threshold of pump power for a long-pulse YAG laser is determined. Several relationships in the text are proven and a simple mathematical model is developed to include inserted intra-cavity losses.
Lab Session 2012/09/14 in V15
Lab Report due at the beginning of the class period on the following week (2012/09/21). Failure to submit this lab BEFORE or ON the due date and time will result in an immediate ZERO on the lab and placing of the student on course condition (meaning one more late or missing lab results in immediate EXPULSION from the course without recourse).
Lab 2: Lasing threshold of a Semiconductor Laser
UPDATED for 2012
In the lab, several key physical parameters of a commercial-grade semiconductor diode laser are determined and from these a model is developed to predict the threshold current of the device (following question 5.9 on page 158 of Csele).
Lab Session 2012/09/28 in V15
Lab Report due at the beginning of the class period on the following week (2012/10/05). Failure to submit this lab BEFORE or ON the due date and time will result in an immediate ZERO on the lab and placing of the student on course condition (meaning one more late or missing lab results in immediate EXPULSION from the course without recourse).
Marking Scheme: Q1=2, Q2=2, Q3=2, Q4=1, Q5=2, Q6=11, Q7=4, Q8=3, Q9=4, Q10=3, Q11=3, Q12=2 for a total of 39 marks
Lab #3: Time Domain Modelling of a Solid-State Laser System
UPDATED for 2012
By monitoring the flashlamp intensity of a solid-state YAG laser, a model is developed to predict the inversion, and hence the gain, as it develops in time taking into account both pumped population as well as spontaneous decay. Results of the model are compared to actual experimental results. In this manner, the optimal time to open the Q-switch may be predicted.
This is a two-week lab.
PART A: Lab Session 2012/11/02 in V15
PART B: Lab Session 2012/11/09 in V15
Lab Report for Part A (consisting of the spreadsheet model using experimentally-determined pump pulse parameters) due at the beginning of the second lab period on 2012/11/09. Lab Report for Part B is due in class on 2012/11/16.
Lab #4: Double-Pulse Q-Switched lasers
An Apollo 22HD double-pulsed ruby laser employing an EO Pockels cell Q-switch will be used to investigate energy storage in a solid-state laser medium. The first pulse will be set to zero and the second pulse to optimally deplete the energy in the rod. The first pulse will then be varied until pulse energy is matched between the two and finally the second pulse is extinct. Calculations will then be performed determining the energy storage parameters of the rod. This experiment will be performed in V13A (advanced optics lab) where the laser is housed.
Lab Session 2012/11/23 in V15
The lab schedule is subject to change based on availability of laboratory equipment
For the Photonics Technician/Technology programs ...
Program Coordinator Alexander McGlashan
Telephone (905) 735-2211 x.7513
For this specific course ...
Some images and text excerpted from Fundamentals of Light Sources and Lasers by Csele, John Wiley & Sons, 2004, ISBN 0-471-47660-9 and hence are Copyright © John Wiley and Sons. Further reproduction in any form is prohibited without written approval from the publisher.