product

QE65000 Raman

/ Spectrometer systems

Scientific-grade spectrometer for Raman

Our QE65000-Raman Scientific-grade spectrometer is a preconfigured combination of detector, optical bench and electronics that provides your with a remarkably sensitive system for demanding low-light level Raman spectroscopy.

The QE65000-Raman can achieve up to 90% quantum efficiency with high signal-to-noise and rapid signal processing speed.

  • quantum Efficiency to 90%
  • increased System Sensitivity
  • excellent UV Response
  • available as a complete Raman SpectraKit
  • demanding low-light level applications
  • onboard programming
  • plug-and-play USB operation
  • configuration
  • pricing
  • specifications
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Physical
Dimensions 182 mm x 110 mm x 47 mm
Weight 1.18 kg (without power supply)
Detector
Detector Hamamatsu S7031-1006
Detector range 200-1100 nm
Pixels 1024 x 58 (1044 x 64 total pixels)
Pixel size 24.576 μm2
Pixel well depth 1000 Ke-
Sensitivity ~0.065 counts / e-
Quantum efficiency 90% peak; 65% at 250 nm
 Optical bench
Design f/4, Symmetrical crossed czerny-turner
Focal length 101.6 mm input and output
Entrance aperture 50 μm wide slit
Hc6 grating Provides 123-170 nm range
Detector collection lens option None
Collimating and focusing mirrors Standard only
UV enhanced window No
Fiber optic connector SMA 905 to 0.22 numerical aperture single-strand optical fiber
 Spectroscopic
Wavelength range 780 – 1100 nm (grating dependent)
Optical resolution ~6 – 19cm-1 (Slit dependant)
Signal-to-noise ratio 1000:1 (at full signal)
A /D resolution 16 bit
Dark noise 3 RmS counts
Dynamic range 7.5 x 109 (system), 25000:1 for a single acquisition
Integration time 8 ms to 15 minutes
Stray light ≤0.08% at 600 nm; 0.4% at 435 nm
Corrected linearity ≥99.8%
 Electronics
Power consumption 500 ma @ 5 Vdc (no tE cooling); 3.5 a @ 5 Vdc (with tE cooling)
Data transfer speed Full scans to memory every 7 ms with USB 2.0 port, 18 ms with USB1.1 port, 300 ms with serial port
Inputs/outputs 10 onboard digital user-programmable gpios (general purpose inputs/outputs)
Analog channels No
Auto nulling Yes
Breakout box compatibility Yes, HR4-BREaKoUt
Trigger modes 4 modes
Strobe functions No
Gated delay feature Yes
Connector 30-pin connector
Power-up time ≤5 seconds
Dark current 4000 e-/pixel/sec @ 25 oc; 200 e-/pixel/sec @ 0 oc
 Computer
Operating systems Windows 98/me/2000/Xp, mac oS X and Linux with USB port; any 32-bit Windows oS with serial port
Computer interfaces USB 2.0 @ 480 mbps; RS-232 (2-wire) @ 115.2 K baud
Peripheral interfaces Spi (3-wire); i2c inter-integrated circuit
Temperature & thermoelectric (te) cooling
Temperature limits 0 oc to 50.0 oc; no condensation
Set point Software controlled; lowest set point is 40 oc below ambient
Stability +/-0.1 oc of set temperature in ≤2 minutes
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Optical Bench enhancements

The great performance of our QE65000-Raman Spectrometer has been enhanced to provide even more value: lower stray light, improved efficiency in the UV and Shortwave NIR, and better unit-to-unit reproducibility. We are also offering a proprietary low BRDF bench coating to improve stray light performance and provide better reproducibility in unit-to-unit performance.

 

Quantum efficiency to 90%

The QE65000 is the most sensitive spectrometer we have ever developed. the Hamamatsu fft-ccd detector used in the QE65000- Raman provides 90% quantum efficiency (defined as how efficiently a photon is converted to a photo-electron). most of our other detectors are linear ccds but with this “2d” area detector, we can bin (or sum) a vertical row of pixels, which offers significant improvement in the signal-to-noise ratio (>1000:1) and signal processing speed of the detector compared with a linear ccd, where signals are digitally added by an external circuit.

Increased system sensitivity

In our spectrometers with linear ccds, the slit’s width, not its height, regulates the amount of light entering the bench because linear ccds cannot efficiently collect the light from the entire height of the slit. But in the QE65000, the 2d area detector can better take advantage of the height of the slit and the additional light, greatly improving system sensitivit.

Excellent UV response

Because the detector in the QE65000-Raman is back-thinned (or back-illuminated), it has great native response in the UV and does not require the additional coatings that we typically apply to other detectors for UV applications.

Demanding low-light level applications

The QE65000-Raman Spectrometer is a great option for low-light level Raman spectroscopy. The TE-cooled (down to -15 °c) detector features low noise and low dark signal, which enables low-light level detection and long integration times (analogous to the shutter speed of a camera) from 8 milliseconds to 15 minutes, with virtually no spectral distortion.

Onboard programming

The QE65000-Raman also has an onboard programmable micro-controller for controlling the spectrometer and accessories. You have access to 10 user-programmable digital inputs/outputs and a pulse generator for triggering other devices. You can use the i/os to flash a lamp, stop/start a process, and send a message/alarm during the spectrometer’s integration period. the spectrometer’s operating parameters can be controlled through software. in fact, wavelength calibration coefficients unique to each spectrometer are programmed into a memory chip right on the spectrometer.

Plug-and-play USB operation

The QE65000-Raman interfaces to a computer via USB 2.0 or RS-232 serial port. data unique to each spectrometer are programmed into a memory chip on the QE65000; our SpectraSuite Spectroscopy operating Software reads these values for easy setup and hot swapping among computers, whether they run on Linux, mac or Windows operating systems.

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