| US 7,492,979 B2 | ||
| Photonic crystal laser sensors and methods | ||
| Shih-Yuan Wang, Palo Alto, Calif. (US); M. Saif Islam, Mountain View, Calif. (US); Alex Bratkovski, Mountain View, Calif. (US); and Ray Beausoleil, Redmond, Oreg. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Sep. 27, 2004, as Appl. No. 10/951,916. | ||
| Prior Publication US 2006/0072642 A1, Apr. 06, 2006 | ||
| Int. Cl. G02B 6/00 (2006.01); G01B 9/02 (2006.01); H04B 10/00 (2006.01) | ||
| U.S. Cl. 385—12 [385/14; 385/27; 385/39; 385/129; 356/477; 372/43.01; 398/115] | 26 Claims |
| 1. A sensor apparatus comprising:
a laser optically coupled to a photonic crystal structure configured to provide an evanescent field through a sensed medium
region such that the photonic crystal structure functions as a cavity/resonator for the laser;
wherein the photonic crystal structure includes defects that have nanometer scale dimensions ranging from 0.1 nanometers to
50 nanometers.
|