File:Cascade transitions.svg
Size of this PNG preview of this SVG file: 361 × 248 pixels. Other resolutions: 320 × 220 pixels | 640 × 440 pixels | 1,024 × 703 pixels | 1,280 × 879 pixels | 2,560 × 1,759 pixels.
Original file (SVG file, nominally 361 × 248 pixels, file size: 50 KB)
Summary
| Description | Intersubband optical transitions within a quantum cascade structure. Electrons emit a photon as they transfer to a lower energy level. The electron tunnels to the next period of the structure and the process repeats. Real quantum cascade devices are more complex than this structure, as they may employ several quantum wells in each period. In a quantum cascade laser, population inversion may be achieved by "draining" electrons from the lower laser state by non-radiative scattering. |
| Date | |
| Source | Self-made in inkscape |
| Author | Alexander Valavanis, University of Leeds |
Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
|
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:33, 29 August 2007 | | 361 × 248 (50 KB) | Papa November | Trimmed edges |
| 10:32, 29 August 2007 |  | 640 × 480 (50 KB) | Papa November | {{Information |Description=Intersubband optical transitions within a quantum cascade structure. Electrons emit a photon as they transfer to a lower energy level. The electron tunnels to the next period of the structure and the process repeats. Real qua |
File usage
The following page uses this file:
Global file usage
The following other wikis use this file:
- Usage on de.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on ro.wikipedia.org
