Nanocrystal waveguide (NOW) laser
Patent
·
OSTI ID:1175235
A solid state laser includes an optical waveguide and a laser cavity including at least one subwavelength mirror disposed in or on the optical waveguide. A plurality of photoluminescent nanocrystals are disposed in the laser cavity. The reflective subwavelength mirror can be a pair of subwavelength resonant gratings (SWG), a pair of photonic crystal structures (PC), or a distributed feedback structure. In the case of a pair of mirrors, a PC which is substantially transmissive at an operating wavelength of the laser can be disposed in the laser cavity between the subwavelength mirrors to improve the mode structure, coherence and overall efficiency of the laser. A method for forming a solid state laser includes the steps of providing an optical waveguide, creating a laser cavity in the optical waveguide by disposing at least one subwavelength mirror on or in the waveguide, and positioning a plurality of photoluminescent nanocrystals in the laser cavity.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Number(s):
- 6,853,669
- Application Number:
- 10/315,578
- OSTI ID:
- 1175235
- Country of Publication:
- United States
- Language:
- English
The role of quantumâconfined excitons vs defects in the visible luminescence of SiO 2 films containing Ge nanocrystals
|
journal | April 1996 |
Visible photoluminescence from nanocrystallite Ge embedded in a glassy SiO 2 matrix: Evidence in support of the quantum-confinement mechanism
|
journal | January 1995 |
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