VS7000-CCD-HS

Spectral coverage

UV-VIS (200–860 nm), 250 nm optimized grating, built-in order-sorting filter
VIS (380–750 nm), VIS-blazed grating, built-in long-pass filter
UV-NIR (200–1050 nm), dual-blaze grating, built-in order-sorting filter

Numerical aperture

f/2.8

Stray light rejection
Typical (Maximum)

0.01% (0.02%) for UV-VIS configuration with 300 µm tall CCD, measured at 700 nm
(measured with broad bandpass 510 nm filter, 75 µm slit-width)
>2.4 AU linear range (5% variation) with caffeine 273 nm absorption peak in 10 mm cuvette and D₂ lamp.

CCD detector
Typical QE

Back-illuminated CCD with low etaloning in NIR
65% peak QE in UV

Detector height
Fiber-optic option

300 µm CCD height standard (1000 µm optional)
600 µm dia., 1.5 m long fiber-optic (for 1 mm tall CCD, prefer 800–1000 µm dia.)

Thermoelectric stabilization

None. Dark current and CCD-pattern noise must be subtracted. User must switch off light source or install
manual shutter in optical path.

Spectral resolution
Pixel resolution
Slit (factory configuration)

UV-VIS: 75 µm slit, 2048 pixels, 2.7 nm resolution; 0.33 nm/pixel
(confi guration with 300 µm tall CCD)
Available slits: 12-25-37-50-62-75-100-125-150-200 µm (contact us for other gratings)

Improved CCD full well
Raw non linearity
Factory corrected linearity

>200 ke^–
<1.5%
<0.4%

Typical dynamic range

6000:1

A/D converter

16 bit, 2 MHz (pixel rate)

Typical dark current

1.3 count/ms at 20°C (room temp.); typical offset = 1000 counts

Typical readout noise

35 e^– (max = 45 e^–) RMS

Readout speed

1.1 (1.3) ms; 890 (760) spectra/s with 0 ms exposure time with respectively 300 µm (1000 µm) CCD height

Typical signal-to-noise ratio

450:1 (shot-noise-limited conditions)

Gain selection

3 e^_–/count

Dimensions (H × W × D)

2.9” × 4.1” × 4.3” (73.0 mm × 103.2 mm × 109.4 mm)

Weight

1.8 lb (0.82 kg)