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Title: Semiconductor Laser Diode
Url: http://ecee.colorado.edu/~bart/book/movie/movie1.htm
Creator: Van Zeghbroeck, Bart Jozef
Publisher: University of Colorado, Boulder. Dept. of Electrical and Computer Engineering
Description: This is a quicktime presentation of a semiconductor laser diode. Laser diodes come in a compact transistor-like package with two or more electrical leads. Inside the package is the tiny semiconductor chip, containing the laser cavity. The chip contains a stack of epitaxial layers with different doping and compositions that provide optical and electrical confinement. Flatband Diagram Energy band diagrams provide an insight into the flow of electrons and holes in a semiconductor laser diode and the recombination of those carriers resulting in the emission of photons. The flatband diagram is directly related to the aluminum fraction. Energy band diagrams are presented at several bias voltages. The recombination of electrons and holes in the quantum well and the emission of photons from the quantum well are visualized as well. Lasing occurs when stimulated emission causes the amplification of photons confined to the lasing mode. Photons propagating along the waveguide mode bounce back and forth between the front and back mirror. A diverging beam emerges from the laser diode package.
LC Classification: Science -- Physics -- Electricity and magnetism -- Electricity -- Electric current (General)
Technology -- Electrical engineering. Electronics. Nuclear engineering -- Electrical engineering. Electronics. Nuclear engineering -- Electronics -- Apparatus and materials -- Amplifiers -- Lasers
Technology -- Electrical engineering. Electronics. Nuclear engineering -- Electrical engineering. Electronics. Nuclear engineering -- Electronics -- Apparatus and materials -- Semiconductors -- Diodes
GEM Subject: Science -- Engineering
Science -- Technology
Science -- Physics
Science -- Instructional issues
Vocational Education -- Technology
Key Concept: Physics -- Currents
Physics -- Electricity
Physics -- Lasers
Physics -- Semiconductors
Physics -- Energy
Resource Type: Demonstrations
Instructional Materials
MovingImage (DCMI Type Vocabulary)
Science Materials
Format: html
Audience: College/University Instructors
Higher Education
Secondary Education
Technical School First Cycle
Technical School Second Cycle
University First Cycle
University Postgrad
University Second Cycle
Vocational Training
Language: English
Rights: Bart Van Zeghbroeck
Access Rights: Free access
Subject: Materials Science and Engineering -- Advanced Instrumentation
Date Of Record Release: 2012-09-28 12:13:22 (W3C-DTF)
Date Last Modified: 2011-10-13 11:16:37 (W3C-DTF)
Source Type: ATE Center
Source: NetWorks
Full Record Views: 96
Resource URL Clicks: 10
Cumulative Rating: NOT YET RATED
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