Tunable spectroscopic source with power stability and method of operation
US6980573B2 · kind B2 · utility
7Cited by
15References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Sep 8, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1039
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser system for a spectroscopic catheter system utilizes an overmoded cavity in order to reduce mode hoping induced power fluctuations during wavelength scanning. In the preferred embodiment, a semiconductor gain medium is used to reduce cost. A fiber pigtail is used to define the laser cavity, which has a tight cavity mode spacing of less that 15 Gigahertz. A diffraction grating is used as the tuning element. A cylindrical lens is used to reduce alignment tolerances and thereby increase manufacturability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.