ARYELLE Butterfly

ARYELLE 400 Butterfly spectrometer

The high-performance wide-range double echelle spectrograph provides two separate spectral setups for the VUV and UV-VIS-NIS ranges, each with 400 mm focal length and one shared detector – maximum flexibility for precise elemental analysis with LIBS and Raman spectroscopy.

  • Two separate spectral ranges: VUV and UV-VIS-NIR
  • High spectral resolution (9,000-50,000)
  • Large simultaneous wavelength range
  • Suitable with various detectors (CCD, ICCD)
  • High light throughput


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.
ARYELLE optical setup

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


Setup 1 2 3
Wavelength range1 190-330 nm / 330-850 nm 190-405 nm / 400-930 nm 192-433 nm / 425-750 nm
Spectral resolving power λ/min. measurable FWHM1 30,000 / 15,000 45,000 / 37,500 14,000 / 20,000
Spectral resolution1,2 6-11 pm / 22-57 pm 4.2-9 pm / 11-25 pm 13-31 / 29-37 pm
Detector resolution 2,048 x 512 px 2,048 x 2,048 px 1,024 x 1,024 px
Image area 27.6 x 6.9 mm² 27.6 x 27.6 mm² 13.3 x 13.3 mm²
Chopper yes yes no
Step width, min. 0.1 µs 0.1 µs 1 ns
Gate width 5 ns


1 Depending on the chosen grating and prism, other ranges possible (down to 175 nm)
2 Depending on the slit width, other widths possible

Other spectral resolutions, wavelength ranges, CCD and ICCD detectors on request
Subject to technical changes without notice


ARYELLE 400 Butterfly spectrum Hg UV rangeARYELLE Butterfly spectrum Hg lamp UV range
ARYELLE 400 Butterfly spectrum Hg VIS rangeARYELLE Butterfly spectrum Hg lamp VIS range
ARYELLE 400 Butterfly spectrum Hg UVARYELLE Butterfly spectrum Hg lamp @ 253 nm UV range
ARYELLE 400 Butterfly spectrum Hg VISARYELLE Butterfly spectrum Hg lamp @ 435 nm VIS range
ARYELLE 400 Butterfly LIBS spectrum Cu UVARYELLE Butterfly LIBS spectrum Cu UV range
ARYELLE 400 Butterfly LIBS spectrum Cu VISARYELLE Butterfly LIBS spectrum Cu VIS range




Benchtop sample chamber for spatially resolved LIBS analysis


Multimode quarz fibers for laser & spectrometer coupling