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

波长校准测试与积分场分光光度计PMAS使用创新的光学频率梳源开发的innoFSPEC-AIP。该光源由一组等间隔的光谱线组成，光谱范围为725 ~ 890 nm，模线间距为0.8 nm。梳线将在全模间距（0.8nm）上进行扫描，这是世界上同类仪器中独一无二的特性。通过在PMAS光谱仪中馈送梳状光，并将每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，还可以校准其线扩展函数。

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.