Home Page > > Details

Lasers and Integrated Optics M (ENG5298)

Semiconductor Lasers Assignment

You should prepare a report of not more than 3 pages addressing the points and questions set out

below. The report should be handed in to the Teaching Office by 1700 on Monday 18 November

2019.

Please note that late submissions will be subject to the penalties set out in the Code of Assessment.

(a) What is meant by mode locking in a laser?

(b) How would you design a 1.5 µm edge-emitting semiconductor laser to generate a 40 GHz pulse

stream? You should consider factors such as the length of the cavity, the refractive index of the

material, and indicate other typical dimensions of the device. How many wavelengths does the

cavity length correspond to?

(c) Develop a simple numerical model for the 1.5 µm laser you designed in part (b). Use it to

demonstrate how the addition of several longitudinal modes leads to the formation of pulses.

The model can be based on Python, MATLAB or similar, or even Excel.

Use the equation from the lecture notes:

𝐸(𝑡) = ∑𝐸𝑛 exp{𝑗[(𝜔0 + 𝑛𝛥𝜔)𝑡 + 𝜙𝑛]}𝑛

where 𝜔0 is an arbitrarily chosen resonant frequency of the cavity

and

𝑃 ∝ 𝐸(𝑡)𝐸∗

(𝑡)

(d) Using the model, show what happens when the phase angles of the modes are all set at zero.

(e) Show what happens when the modes have random phase angles.

(f) What happens when the modes have different amplitudes?

J. H. Marsh Nov 2019

Contact Us(Ghostwriter Service)

- QQ：99515681
- WeChat：codinghelp2
- Email：99515681@qq.com
- Work Time：8:00-23:00

- Tsp Course Assignmentghostwriter ,Help... 2020-06-23
- Kit107 Assignmenthelp With ,C++ Progra... 2020-06-23
- Sta302h1f Assignmenthelp With ,Ghostwr... 2020-06-22
- Ghostwriter Seng 474 Assignment,Help W... 2020-06-22
- Cmpsci 187 Binary Search Trees 2020-06-21
- Comp226 Assignment 2: Strategy 2020-06-21
- Math 504 Homework 12 2020-06-21
- Math4007 Assessed Coursework 2 2020-06-21
- Optimization In Machine Learning Assig... 2020-06-21
- Homework 1 – Math 104B 2020-06-20
- Comp1000 Unix And C Programming 2020-06-20
- General Specifications Use Python In T... 2020-06-20
- Comp-206 Mini Assignment 6 2020-06-20
- Aps 105 Lab 9: Search And Link 2020-06-20
- Aps 105 Lab 9: Search And Link 2020-06-20
- Mech 203 – End-Of-Semester Project 2020-06-20
- Ms980 Business Analytics 2020-06-20
- Cs952 Database And Web Systems Develop... 2020-06-20
- Homework 4 Using Data From The China H... 2020-06-20
- Assignment 1 Build A Shopping Cart 2020-06-20

Contact Us - Email：99515681@qq.com WeChat：codinghelp2

© 2014 www.asgnhelp.com

Programming Assignment Help！