发明名称 |
SEMICONDUCTOR DIODE LASER SPECTROMETER ARRANGEMENT AND METHOD |
摘要 |
A method apparatus for sensing gases using a semiconductor diode laser spectrometer, the method comprising: introducing a sample gas into a non- resonant optical cell (17); applying a step function electrical pulse (19) t o a semiconductor diode laser (20) to cause the laser (20) to output a continuous wavelength chirp for injecting (16a) into the optical cell (17); injecting (16a) the wavelengh chirp into the optical cell (17); using the wavelength variation provided by the wavelength chirp as a wavelength scan, and detecting (23) light emitted from the cell (17), wherein a chirp rate is selected to substantially prevent light interference occuring in the optical cell (17). |
申请公布号 |
CA2482402(A1) |
申请公布日期 |
2003.10.23 |
申请号 |
CA20032482402 |
申请日期 |
2003.04.08 |
申请人 |
CASCADE TECHNOLOGIES LTD.;NORMAND, ERWAN |
发明人 |
LANGFORD, NIGEL;DUXBURY, GEOFFREY;NORMAND, ERWAN |
分类号 |
G01J3/42;G01N1/00;G01N21/03;G01N21/39;H01S5/00;H01S5/34 |
主分类号 |
G01J3/42 |
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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