ARYELLE 150 spectrometer

The most compact and cost-efficient UV-VIS-NIR echelle spectrometer of LTB’s ARYELLE series with a focal length of 150 mm and 2 kg weight without detector – suitable for reliable and portable LIBS and Raman applications.

  • Very compact and stable
  • High spectral resolution (5,000-11,000)
  • Large simultaneous wavelength range
  • Can be combined with various detectors (CCD, EMCCD)
  • Up to 30 spectra/s


The ARYELLE 150 is the smallest optical fiber coupled ARraY echELLE spectrometer with high sensitivity and high imaging quality at a size of only 210 x 120 x 85 mm3. It features a patented optical design with an aperture of f/7 and a focal length of 150 mm. The dispersion unit with echelle grating, prism, imaging optics and entrance slit can individually be adapted to different customer applications. Depending on the required simultaneously detectable wavelength range, the ARYELLE 150 provides the measurement of two-dimensional echelle spectra from the UV up to the NIR range with a spectral resolving power of 5,000 up to 11,000 (at 35 µm slit width).
ARYELLE optical setup

Various CCD and EMCCD cameras are suitable for the designed detection area of 8 x 8 mm². The optional chopper guarantees a sufficient time resolution of 0.1 µs for LIBS analysis. 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/7
Focal length 150 mm
Slit width 35 µm x 35 µm
Wavelength range 220-800 nm
Spectral resolving power 6,000
Spectral resolution FWHM 36-133 pm
Absolute accuracy spectral resolution / 4
Order crosstalk 5 x 10-3
Stray light 1 x 10-5
Detector CCD (USB), 8 x 8 mm2 image area
Dynamic range 14 bit, AD conversion
Light coupling SMA fiber coupling
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) (210 x 120 x 85) mm
Weight without detector 2 kg


Other spectral resolutions and wavelength ranges on request

Subject to technical changes without notice


ARYELLE 150 spectrum HgARYELLE 150 spectrum Hg lamp @ 546 nm
ARYELLE 150 LIBS spectrum CuARYELLE 150 LIBS spectrum Cu – selected wavelength range




Benchtop sample chamber for spatially resolved LIBS analysis


Multimode quarz fibers for laser & spectrometer coupling