Electron-beam excitation laser

• US 20040218651A1
• Filed: 06/03/2004
• Published: 11/04/2004
• Est. Priority Date: 03/03/2000
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Iwasaki, Tatsuya, Den, Tohru
• Granted Patent: US 7,126,975 B2
• Time in Patent Office: Days
• US Class Current: 372/69
• CPC Class Codes: H01S 3/0959 by an electron beam
• CPC Class Codes: H01S 5/02208 characterised by the shape of the housings
• CPC Class Codes: H01S 5/0222 Gas-filled housings
• CPC Class Codes: H01S 5/04 Processes or apparatus for excitation, e.g. pumping, e.g. by electron beamsH01S5/06 takes precedence
• CPC Class Codes: H01S 5/11 Comprising a photonic bandgap structure
• CPC Class Codes: H01S 5/183 having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
• CPC Class Codes: H01S 5/3018 AIIBVI compounds
• CPC Class Codes: H01S 5/423 having a vertical cavity

Abstract

An electron-beam excitation laser has a laser structure with a light emitter and reflectors on one hand and an electron source on the other hand, wherein at least part of the light emitter or reflectors has a multidimensional photonic crystal structure. An electron-beam excitation laser includes an electron source emitting electrons and a laser structure consisting of a light emitter and reflectors, accelerates electrons from the electron source, and irradiates the electrons to the laser structure to emit a laser beam from the laser structure, wherein the reflectors and/or the light emitter in the laser structure are formed with multidimensional photonic crystals in which dielectrics with different dielectric constants are arrayed in a plurality of directions at periodic intervals, and one of the dielectrics with different dielectric constants may be formed with a light-emitting material.

Claims

1. An electron-beam excitation laser comprising an electron source to emit electrons, a light emitters and reflectors, wherein said reflectors have a, multidimensional photonic crystal structure in which dielectrics with different dielectric constants are arrayed and one dielectric is a vacuum part.

4. The electron-beam excitation laser according to claim 1, wherein the multidimensional photonic crystal structure is formed by regularly and two-dimensionally arraying in a first dielectric cylindrical second dielectrics with a brachyaxis shorter than a wavelength of light emitted at intervals shorter than the wavelength of light emitted.

5. The electron-beam excitation laser according to claim 1, wherein a part of the multidimensional photonic crystal structure has defects.

6. The electron-beam excitation laser according to claim 5, wherein the defects are dielectrics which differ in size from other dielectrics.

7. The electron-beam excitation laser according to claim 1, wherein the multidimensional photonic crystal structure, which is formed by anodizing aluminum, has such an anodized alumina nanohole structure that cylindrical nanoholes are regularly and two-dimensionally arrayed in an alumina layer.

8. An electron-beam excitation laser as set forth in claim 1, wherein the said light emitter is formed with a multidimensional photonic crystal in which dielectrics with different dielectric constants are arrayed in a plurality of directions at periodic intervals, and one of the dielectrics with different dielectric constants is formed with a light-emitting material.

18. An electron-beam excitation laser as set forth in claim 1, wherein said light emitter and reflectors are formed with multidimensional photonic crystals in which dielectrics with different dielectric constants are arrayed in a plurality of directions at periodic intervals, and one of the dielectrics with different dielectric constants in the multidimensional photonic crystal forming the said light emitter is formed with a light-emitting material.

2. (Canceled)

3. (Canceled)

9-17. -17. (Canceled)

19-32. -32. (Canceled)