System for swept source optical coherence tomography
US7468997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/18366
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A swept source Optical coherence tomography system (SSOCT) comprises a vertical cavity surface-emitting laser with an integrated MEMs tunable mirror movable by electro-static deflection. The MEMs tunable VCSEL offers scan rates greater than 100 khz and tuning ranges approaching 200 nm around 1300 nm and 150 nm around 850 nm. In the preferred embodiment of this invention, a bottom mirror of the VCSEL is comprised of a Aluminum Gallium Arsenide/Aluminum Oxide DBR stack, and a movable top mirror is comprised of a TiO2/SiO2 DBR stack. A MEMs tunable VCSEL at 1300 nm is preferably pumped through the top mirror in a wavelength range between 1050 and 1120 nm, and a MEMs tunable VCSEL at 850 nm is preferably pumped through the top mirror in a wavelength range between 700 nm and 730 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.