Article · Wikipedia archive · Last revised Jul 19, 2026

Strained quantum-well laser

A strained quantum well laser is a type of quantum-well laser, which was invented by Professor Alf Adams at the University of Surrey in 1986. The laser is distinctive for producing a more concentrated beam than other quantum well lasers, making it considerably more efficient. The lasers are notable for usage in CD, DVD, and Blu-Ray drives as well as applications in supermarket barcode readers and telephone optical transmission.

Last revised
Jul 19, 2026
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A strained quantum well laser is a type of quantum-well laser, which was invented by Professor Alf Adams at the University of Surrey in 1986. 12 The laser is distinctive for producing a more concentrated beam than other quantum well lasers, making it considerably more efficient. The lasers are notable for usage in CD, DVD, and Blu-Ray drives as well as applications in supermarket barcode readers and telephone optical transmission.1

References

References

  1. "A catalyst to our digital world: strained quantum well lasers—Full Case Study". SET squared. Universities of Bath, Bristol, Exeter, Southampton & Surrey. Archived from the original on 3 April 2015. Retrieved 2 April 2015.
  2. "The Life Scientific: Alf Adams (BBC Streaming Audio)". BBC streaming audio. Retrieved 2024-09-07.