Gentec-EO QE and XLE4 - Manual (Page 22)

QE Series Joulemeter Instruction Manual Version 3.0 April 2014 22
1.3.4 Specifications for QE4-BL
Footnotes
Model
QE4-BL
Optical Absorber BL
Spectral Range 1, 7 0.19 – 20 µm
Calibrated Spectral Range 1, 7 0.248 – 2.5 µm
Typical Sensitivity 2, 6 150 V/J
Calibration Uncertainty 2, 6, 7, 8, 10 ± 4%
Repeatability < 0.5 %
Max. Pulse Energy 1.064 µm
0.266 µm
3
16 mJ
0.7 mJ
Noise Equivalent Energy (NEE)
(Typ)
2, 10
1 µJ with amplifier
15 µJ with Monitor
Max. Repetition
Rate
2, 4, 10 1200 Hz
Typical Rise Time
(0-100%)
2, 10 200 µsec
Max. Pulse Width (Typ) 2, 5, 9, 10 100 µsec
Max. Energy Density
150 mJ/cm
2
@ 1.064µm, 7ns, 10 Hz
6 mJ/cm
2
@ 266nm, 7ns, 10 Hz
Max. Average Power 11 0.3 W
Dimensions (H x W x D) 20 x 17.5 x 30 mm
Weight 20 g
Aperture Size 3.7 mm diameter
Aperture Area Size : 0.108 cm
2
FOOTNOTES FOR QE4 BL SERIES SPECIFICATIONS:
1
See “Personal wavelength correction” certificate
190 Load capacitance must be

13 pF, excluding the supplied BNC to DB- 15 “Smart Interface”
coaxial cable.
190 Assuming 0.15 J/cm
2
@ 1.064µm,7ns laser beam; with a uniform energy distribution; energy
applied to full aperture. Increasing the pulse width increases the maximum measurable energy.
4 At constant power.
5 To maintain indicated calibration, sensitivity must be de-rated for longer pulses.
6 Calibrated at: 2 mJ, 5 Hz, @1.064 µm, 150 µsec pulse (FWHM), semi-Gaussian beam profile, energy
applied to 80% of aperture, loaded into 1 M

/ 13 pfd.
7 For values other than calibrated wavelength only a typical value is available.
8 Excludes non-linearities.
9 Duration at base of pulse. Divide by 2 for FWHM (Full Width at Half Maximum) duration.
10 Loaded into 1 M

/ 13 pfd.
11 Warning: Detector body can reach 60°C at maximum power.