QE65000 Research-Grade Raman Spectrometer

QE65000 Research-Grade Raman Spectrometer; The QE65000 Research-Grade Spectrometer combines the functions of a detector, optical bench, and electronics to provide users with a sensitive system that meets applications under low-light conditions, such as fluorescence measurement, DNA sequencing, astronomy, and Raman spectroscopy. The QE65000 Research-Grade Spectrometer has a quantum efficiency of up to 90%, and features a very high signal-to-noise ratio and fast signal processing capability.; Quantum efficiency up to 90%; Higher system sensitivity; Excellent UV response capability; Meets the conditions for low-light-level applications; Onboard microcontroller; Plug-and-play USB; Optical bench; Installation and user manual; Specifications; The Ocean Optics QE65000 Research-Grade Raman Spectrometer is the most sensitive spectrometer among our developed products, and its quantum efficiency (defined as the efficiency of converting photons into photoelectrons) can reach 90%.; The QE65000 Research-Grade Raman Spectrometer contains a thin back-thinned (Back-thinned) detector with extremely strong UV sensitivity manufactured by Hamamatsu of Japan. Its two-dimensional pixel arrangement (1044 pixels horizontal × 64 pixels vertical) can respond to optical signals in the wavelength range of 200–1100 nm. The specific spectral range and resolution are determined by the user's choice of grating and entrance slit. The pixel columns of the detector are accumulated before data output, which minimizes the noise of the acquired data.; With the included thermoelectric cooler, the detector can be cooled to minus 20°C to reduce dark noise. The reduction of noise and dark signal allows the spectrometer's integration time to reach 15 minutes, and thus greatly improves the detection limit in low-light-level testing.; The spectrometer's low-noise detector and 16-bit analog-to-digital converter enable a dynamic range of 25000:1 and a signal-to-noise ratio greater than 1000:1.; Because the two-dimensional detector allows the spectrometer to make good use of the height of the entrance slit, the sensitivity of the Ocean Optics QE65000 Research-Grade Raman Spectrometer has been improved to a certain extent. In other spectrometers we produce, the light entering the optical bench is adjusted by the width of the entrance slit; the slit height has no effect because a linear detector cannot efficiently collect light across the entire height of the slit. By using the two-dimensional detector of the QE65000 Research-Grade Spectrometer, we can make better use of the additional optical signal from the height direction.; The thin back-thinned (Back-thinned) detector of the QE65000 Research-Grade Raman Spectrometer has excellent UV response capability and does not require an external coating to improve its performance.; The QE65000 Research-Grade Raman Spectrometer is an excellent choice for low-light applications, including fluorescence, Raman spectroscopy, DNA sequencing, astronomy, and thin-film reflection. As needed, users can set the spectrometer's integration time (similar to a camera's shutter speed) to a value within 8 ms–15 min without optical distortion. Below is an example of fluorescence analysis using the QE65000 Research-Grade Raman Spectrometer, the CUV-ALL four-way cuvette holder, and the PX-2 Xenon Light Source. Special note: In order to externally trigger the PX-2 Xenon Light Source, an HR4-BREAKOUT breakout box is also required.; Raman spectrum of an acetaminophen solid; this experiment used the QE65000 Research-Grade Spectrometer, a 785 nm laser, and a Raman probe.; User-Programmable Input/Output Ports; The module included with the QE65000 Research-Grade Raman Spectrometer contains 10 user-programmable digital input/output ports to facilitate connection with other devices; it also contains a pulse generator that can trigger other devices. During the spectrometer's integration period, users can use these input/output ports to turn on light sources, start or stop a process, or send messages and prompts. The operating parameters of the spectrometer can be controlled via software. In fact, the wavelength calibration coefficients specific to each spectrometer are also set in the spectrometer's memory chip.; Specifications of the QE65000 Research-Grade Raman Spectrometer; Physical Appearance of the Spectrometer; Dimensions; 182 mm x 110 mm x 47 mm; Weight; 1050 g; Spectrometer Detector; Detector Model; Hamamatsu S7031-1006; Detection Range; 200-1100 nm; Pixels; 1024 x 58 (total pixels 1044 x 64); Total size 24.6 square micrometers; Pixel Size; 24.576 square micrometers; Pixel Well Depth; 300000 electrons/pixel; 1500000 electrons/column; Sensitivity; 250 nm wavelength: 26 photons/count; other wavelengths: 22 electrons/count; Quantum Efficiency; 90% peak; Spectrometer Optical Bench; Design; f/4, crossed asymmetric Czerny-Turner optical path; Focal Length; 101.6 mm for both input and output; Entrance Aperture; slits of 5, 10, 25, 50, 100, or 200 μm width, or optical fiber (no slit); Optional Gratings; 14 optional gratings, UV to near-infrared; HC-1 Grating; Spectral Range 200–950 nm; Optional Detector Condenser Lens; None; Optional OFLV Filter; OFLV-QE Filter; Other Filters; Longpass OF-1 series filters; Calibration and Condenser Mirror; Standard; UV-Enhanced; Fiber Connection; SMA905 connector, connected to 0.22 aperture single-strand optical fiber; Optical Characteristics of the Spectrometer; Wavelength; Determined by grating; Fiber Resolution; 0.14–7.7 nm full width at half maximum (FWHM); Signal-to-Noise Ratio; 1000:1 (at full signal); A/D Conversion Resolution; 16-bit; Dark Noise; 3 RMS counts; Dynamic Range; 7.5 x 10^9 (system), 25000:1 (single operation); Integration Time; 8 ms–15 min; Optical Drift; Less than 0.08% at 600 nm; 0.4% at 435 nm; Corrected Linearity; >99.8%; Electronic Characteristics; Power Consumption; 5

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