Laser apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsYoshinori Nomura, Tetsuya Nishimura
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Abstract
A laser apparatus includes a resonator and an excitation source as gain section excitation means. The resonator includes a gain section in which population inversion is obtained by optical excitation or current injection, non-gain sections in which gain with respect to a laser oscillating light beam is not positive, and two reflection mirrors. The gain section has an optical path length approximately one half that of the resonator and placed at the central portion with respect to the optical axis of the resonator. The non-gain sections are arranged on both sides of the gain section. The two reflection mirrors are arranged further outside of the non-gain sections.
Claims6
A laser apparatus, comprising:
- a resonator;
- and
- gain section excitation means;
- wherein
- said resonator includes
- a gain section in which population inversion is obtained by at least one method selected from the group consisting of optical excitation and current injection,
- non-gain sections in which gain with respect to laser oscillating light beam is not positive, and
- two reflection mirrors,
- said gain section having an optical path length approximately one half the optical path length of said resonator, and being arranged at a central portion with respect to the optical axis of said resonator,
- said non-gain sections being arranged on both sides of said gain section with respect to the direction of the optical axis of said resonator, and
- said two reflection mirrors being arranged outer than said non-gain sections with respect to the direction of the optical axis of said resonator;
- and
- said gain section excitation means is for setting said gain section to an excited state.
Dependencies are inferred from the claim text.