Title:
PLANAR WAVEGUIDE TYPE LASER DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/026005
Kind Code:
A1
Abstract:
This planar waveguide type laser device is provided with: a planar waveguide comprising a core (1) which is formed from a laser medium that absorbs excitation light (5), and which has an upper surface (1a) and a lower surface (1b) to which clads (2), (3) having smaller refractive indices than the laser medium are bonded; excitation light generating sources (4a), (4b) which emit excitation light (5) onto side surfaces (1c), (1d) of the core (1); and laser light high-reflection films (6a), (6b) formed on side surfaces (1e), (1f) of the core (1), wherein the structure of side surfaces (2e), (2f) of the clad (2) corresponding to the side surfaces (1e), (1f) of the core (1) is configured to be a ridge structure (20) of which some surfaces are recessed. In this way, it also becomes possible to form a waveguide mode with respect to a y-axis direction which is a direction parallel to the waveguide layer structure, thereby suppressing a change in a wave front state or propagation direction of laser light (11).
Inventors:
SAKIMURA TAKESHI (JP)
KONO YUHI (JP)
SAKAI KOHEI (JP)
TAKADA YUKARI (JP)
WATANABE YOJIRO (JP)
SHODA FUMIO (JP)
YANAGISAWA TAKAYUKI (JP)
KONO YUHI (JP)
SAKAI KOHEI (JP)
TAKADA YUKARI (JP)
WATANABE YOJIRO (JP)
SHODA FUMIO (JP)
YANAGISAWA TAKAYUKI (JP)
Application Number:
PCT/JP2015/072514
Publication Date:
February 16, 2017
Filing Date:
August 07, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01S3/063; G02B6/122
Domestic Patent References:
| WO2011027731A1 | 2011-03-10 |
Foreign References:
| JP2008522409A | 2008-06-26 | |||
| US20030063884A1 | 2003-04-03 | |||
| JPH05165070A | 1993-06-29 |
Other References:
See also references of EP 3322049A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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