Commissioning of a continuously tunable frequency comb for wavelength and line-spread-function calibration

积分场光谱仪PMAS的波长校准测试使用了InnoFSPEC-AIP开发的创新光学频率梳光源。该光源包括一组等间隔的谱线，覆盖从725到890 nm的光谱范围，并且具有0.8 nm的模线间隔。梳状线将在全模间距(0.8 nm)上扫描，这是使用这种类型的仪器在世界上独一无二的特性。通过将梳状光馈入PMAS光谱仪，并将每一条线与光谱仪探测器中的像素相关联，我们不仅可以校准该单元的波长响应，还可以校准它的线扩展函数。

The wavelength calibration tests with the Integral Field Spectrophotometer PMAS uses an innovative optical frequency comb source developed at innoFSPEC-AIP. This source comprises a set of equally spaced spectral lines covering the spectral range from 725 to 890 nm and with a mode line separation of 0.8 nm. The comb lines will be scanned over a full mode spacing (0.8nm) being this characteristic unique in the world with this type of instrumentation. By feeding the comb light in the PMAS spectrograph and associating each line with pixels in the spectrograph detector, we will not only calibrate the wavelength response of this unit but also its line-spread-function.