发明名称 |
Semiconductor laser device for use as a pumping light source |
摘要 |
A semiconductor laser device, module, and method for providing light suitable for providing an excitation light source for a Raman amplifier. The semiconductor laser device includes an active layer configured to radiate light, a spacer layer in contact with the active layer and a diffraction grating formed within the spacer layer, and configured to emit a light beam having a plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum of the semiconductor device. A plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum is provided by changing a wavelength interval between the longitudinal modes and/or widening the predetermined spectral width of the oscillation wavelength spectrum. The wavelength interval is set by the length of a resonator cavity within the semiconductor laser device, while the predetermined spectral width of the oscillation wavelength spectrum is set by either shortening the diffraction grating or varying a pitch of the grating elements within the diffraction grating. <IMAGE> |
申请公布号 |
EP1202407(A3) |
申请公布日期 |
2003.12.03 |
申请号 |
EP20010114717 |
申请日期 |
2001.06.21 |
申请人 |
THE FURUKAWA ELECTRIC CO., LTD. |
发明人 |
TSUKIJI, NAOKI;YOSHIDA, JUNJI;FUNABASHI, MASAKI |
分类号 |
H01S3/094;H01S3/30;H01S5/024;H01S5/12;H01S5/227 |
主分类号 |
H01S3/094 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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