发明申请
- 专利标题: TUNEABLE LASER
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申请号: PCT/GB2017/052840申请日: 2017-09-22
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公开(公告)号: WO2018055394A1公开(公告)日: 2018-03-29
- 发明人: KENNEDY, Kenneth Leslie
- 申请人: THE UNIVERSITY OF SHEFFIELD
- 申请人地址: Firth Court Western Bank Sheffield South Yorkshire S10 2TN GB
- 专利权人: THE UNIVERSITY OF SHEFFIELD
- 当前专利权人: THE UNIVERSITY OF SHEFFIELD
- 当前专利权人地址: Firth Court Western Bank Sheffield South Yorkshire S10 2TN GB
- 代理机构: WITHERS & ROGERS LLP
- 优先权: GB1616245.5 20160923
- 主分类号: H01S5/14
- IPC分类号: H01S5/14 ; H01S5/34 ; H01S3/08 ; H01S3/106
摘要:
A tuneable quantum cascade or interband cascade laser (100) has a gain (medium110), a cavity mirror (20), an interference filter (130) and a positioning (mechanism140). The gain medium (110) has an emission spectrum and the gain medium (110) is configured to emit a laser (beam111). The interference filter (130) is located between the gain medium (110) and the cavity (mirror120). The interference filter (130) is configured to transmit a portion of the emission spectrum in order to suppress laser emission by the gain medium at wavelengths other than the transmitted portion. The portion of the emission spectrum transmitted by the interference filter (130) varies across the interference (filter130). The positioning mechanism (140) is configured to move the interference filter (30) relative to the laser beam (111) in order to select the portion of the emission spectrum transmitted by the interference (filter130), thereby determining the emission spectrum of the tuneable (laser100).