Optical wavelength shifting
US7081985B2 · kind B2 · utility
1Cited by
1References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Mar 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/5054
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus (8, 14) for wavelength shifting light from a first frequency ν1 to a second frequency ν2 is provided in the form of a semiconductor intersubband laser (8) lasing at its intersubband frequency ν3. The output light is wavelength shifted to a frequency ν2=ν1+nν3, where n is a non-zero integer ( . . . , −2, −1, 1, 2, . . . ). The wavelength shifted light ν2 may be amplitude modulated and/or frequency modulated to impart information upon it. The wavelength shifting is a coherent process allowing for the possibility of coherent communication techniques to be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.