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Instrument Database:
LLA Instruments GmbH - Echelle Spectra Analyzer ESA 3000
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| Year of introduction |
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| Status |
available |
| Company |
LLA Instruments GmbH
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| Categories |
Spectrometer ( Molec. ): UV/VIS
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Compact Echelle Spectrometer with extraordinary high spectral resolution for different applications in atomic spectroscopy, for active and passive coupling with different radiation sources.
The Echelle Spectra Analyzer ESA 3000 was developed for measurements of complex spectra with a high spectral resolution. The entire UV and visible wavelength range is detected simultaneously with a resolution of few pm.
ESA 3000 is used in atomic spectroscopy, detecting simultaneously all spectral lines with high resolution, relevant for analysis of material, avoiding the overlay of lines. The optional use of an image intensifier permits time-resolved measurement (decay measurements)with a temporal resolution of few nanoseconds. The control of external radiation sources , e.g. laser, and the well-defined time-correlated measurement of the radiation predestines ESA 3000 for Laser Induced Breakdown Spectroscopy (kurz LIBS), for applications for simultaneously multi-element analysis.
The system consist of an Echelle spectrometer aand the electronic control unit. The electronic unit contains the voltage supplies, the ADC, framegrabber and fastpulse generator board besides the industrial PC, all located in a 19" rack. The fastpulse generator board is able to perform the time-control of the entire experiment or to synchronize the system to an external signal.
Inside the spectrometer an intensified CCD-camera is integrated, consisting of an image intensifier and CCD sensor array of high pixel density. The camera is placed in the image plane of the spectrometer. The MCP (Micro Channel Plate)-image intensifier is controlled (open-close) by electric signals and permits the time-resolved measurment of weak signals respectively of dynamic processes.
The time-resolved simultaneous detection of the entire relevant wavelength range permits the optimalö selection of spectral lines according to the application and an optimization of the S/N ratio.
For fast spectra processing non-relevant spectral can be summarized and discarded at an early stage of data processing. A bit pattern,stored in a memory (RAM) provides an orientation for the summarization of selected lines on the detector array.(Line-Binning). During read-out of lines selected parts of a line can be summarized (Column-Binning). Using the binning feature the spectra processing can be accelerated up to one order of magnitude.
Offered as an OEM-version, ESA 3000 is easy to integrate into existing systems and plants. The patented optical setup does not have any moving parts. The compact construction guarantees a high stability of the wavelength calibration and proves the industrial use of the device.
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