发明名称 |
EXTERNAL CAVITY TUNABLE COMPACT MID-IR LASER |
摘要 |
A compact mid-IR laser device utilizes an external cavity to tune the laser. The external cavity may employ a Littrow or Littman cavity arrangement. In the Littrow cavity arrangement, a filter, such as a grating, is rotated to provide wavelength gain medium selectivity In the Littman cavity arrangement, a reflector is rotated to provide tuning. A quantum cascade laser gain medium provides mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the device is obtained owing to an efficient heat transfer structure, the use of a small diameter aspheric lens for both the output lens and the external cavity lens and a monolithic assembly structure to hold the optical elements in a fixed position relative to one another. Efficient heat transfer is achieved using a thermo-electric cooler combined with a heat spreader onto which the quantum cascade laser gain medium is thermally coupled. |
申请公布号 |
WO2008018858(A3) |
申请公布日期 |
2008.06.26 |
申请号 |
WO2006US29975 |
申请日期 |
2006.08.01 |
申请人 |
DAYLIGHT SOLUTIONS;DAY, TIMOTHY;ARNONE, DAVID, F. |
发明人 |
DAY, TIMOTHY;ARNONE, DAVID, F. |
分类号 |
H01S3/10 |
主分类号 |
H01S3/10 |
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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