发明名称 |
High-resolution, compact intracavity laser spectrometer |
摘要 |
In accordance with the present invention, a high-resolution, compact spectrometer is provided for dispersing wavelengths lambda of an incoming beam for detection by a detector. The spectrometer comprises: (a) an entrance slit through which the incoming beam passes; (b) a first mirror for collimating the beam from the entrance slit; (c) a first reflectance grating for dispersing the collimated beam to form a beam having a spectral intensity distribution, the first reflectance grating having a number of grooves N1; (d) a second reflectance grating for further dispersing the collimated beam, the second reflectance grating having a number of grooves N2; and (e) a second mirror for focusing the collimated and dispersed beam, wherein the spectrometer has a substantially symmetrical construction. The symmetrical construction of the spectrometer doubles the resolution and dispersion of the gratings. The compact and high-resolution imaging spectrometer is capable of measuring the absorption lines of gases in high sensitivity gas sensors with an intracavity cell.
|
申请公布号 |
US6151112(A) |
申请公布日期 |
2000.11.21 |
申请号 |
US19970971525 |
申请日期 |
1997.11.17 |
申请人 |
INNOVATIVE LASERS CORP. |
发明人 |
ATKINSON, GEORGE H.;YAN, YU |
分类号 |
G01J3/18;G01J3/28;(IPC1-7):G01J3/18 |
主分类号 |
G01J3/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|