The LIBS2500+ is a broadband (200-980 nm), high resolution detection system with an optical resolution of ~0.1 nm (FwHM). Sensitivity to parts-per-billion and picogram levels is possible.
OEM spectrometers or complete systems are available. Systems include an active Q-switch laser and laser imaging module, a fibre bundle for plasma light guiding, a sample chamber in an eyeware-safe enclosure with manually control- led X, y, Z stage and operating software.
|Dimensions||17.8 x 26.7 x 22.8 cm|
|Dimensions||33.4 x 15.0 x 14.0 cm maximum|
|Wavelength range||200-980 nm (channel dependent)|
|Optical resolution||~ 0.1 nm FWHM|
|Integration time||1 ms; variable in free-run mode|
|Type||Linear silicon CCD detector|
|Pixels||Total of 14.336 pixels|
|Trigger delay||-121 μs to +135 μs in 500 ns steps (user-configured)|
|Trigger jitter||~ 20 nanoseconds|
|Trigger level||TTL not to exceed 5.5 volts|
|Power requirements||5 volts @ ≤1 amp, power supply included|
|Frame rate||1 kHz capability (pc-controlled)|
|Operating systems||Windows 98/Me/2000/Xp on desktop or notebook PCs|
|Computer interfaces||USB 1.1 or USB 2.0|
A high-intensity, pulsed laser beam is focused on the sample area, positioned a few centimeters to a meter from the sample. A single 10 nanosecond-wide laser pulse is all that is needed to excite the sample. When the laser is fired, the high temperature of the laser creates plasma. As the plasma decays or cools (~1.0 µsec after the laser pulse), excited atoms in the plasma emit light of characteristic wavelengths distinct to the element. All elements emit in the 200-980 nm region.
LIBS2500+ systems use up to seven of our HR2000+ high-resolution spectrometers, each with a 2048-element linear CCD array. All spectrometers are triggered to acquire and read out data simultaneously.