The ARYELLE Butterfly is a unique double echelle spectrograph of the ARraY echELLE series. It combines two separate ARYELLE 400 spectrometers that sequentially illuminate one shared detector in a compact housing – a cost-efficient solution covering a wide spectral range with a very high spectral resolution. Thus provides the opportunity to measure with two-dimensional echelle spectra in the VUV and UV-VIS-NIR range with an enormous variability. Each spectrometer part of the ARYELLE Butterfly features an aperture of f/10 and a focal length of 400 mm. The dispersion unit with echelle grating, prism, imaging optics and entrance slit can individually be adapted to nearly all customer applications depending on the required simultaneously detectable wavelength range and spectral resolution. By exclusively applying a CaF2 prism and reflection optics with broad-band UV coatings, chromatic aberrations are avoided.
Various CCD and ICCD cameras are suitable for the designed detection area of 27 x 27 mm². The light coupling into the ARYELLE Butterfly spectrometer is realized via SMA fiber for the UV-VIS-NIR range or via pure reflection transfer optics for the VUV range. Automatic recalibration of the wavelength scale is provided by a mercury lamp and an internal shutter.
The supplied operating software Sophi with optional LabVIEW library allows fully control of all spectrometer-detector functions via graphic user interface and provides automated measurement routines with an integrated scripting language. All lines of the gained spectrum are automatically analyzed with the integrated atomic spectra data base and qualitatively assigned to the corresponding elements. Quantitative analysis is based on calibration with reference materials.
| Optical design |
echelle spectrograph |
| Aperture |
f/10 |
| Focal length |
400 mm |
| Slit width |
50 µm |
| Absolute accuracy |
spectral resolution / 4 |
| Dynamic range |
15 bit, A/D conversion 16 bit |
| Light coupling |
SMA fiber coupling or mirror optics |
| Wavelength calibration |
with mercury lamp |
| Computer |
PC incl. TFT or laptop with Microsoft Windows |
| Software |
Sophi, LabVIEW library optional |
| Dimensions without detector (L x W x H) |
(450 x 280 x 240) mm |
| Weight without detector |
20 kg |
1 Depending on the chosen grating and prism, other ranges possible (down to 175 nm)
2 Depending on the slit width, other widths possible
Benchtop sample chamber for spatially resolved LIBS analysis
Multimode quarz fibers for laser & spectrometer coupling
VI