Gentec-EO QE and XLE4 - Manual (Page 23)

QE Series Joulemeter Instruction Manual Version 3.0 April 2014 23
1.3.5 Specifications for XLE4
Footnotes
Model
XLE4
Optical Absorber XT : Metallic
Spectral Range 6 0.19 – 20 µm
Calibrated Spectral Range 6 0.35 – 2.5 µm
Typical Sensitivity 1, 5 1100 V/J
Calibration Uncertainty 1, 5, 6, 7, 9
± 4% at 1064nm
± 9% for other wavelengths
Repeatability < 0.5 %
Max. Pulse Energy 1.064 µm
2 4 mJ
Noise Equivalent Energy (NEE)
(Typ)
1, 9 150 nJ
Max. Repetition
Rate
1, 3, 9 2000 Hz
Typical Rise Time
(0-100%)
1, 9 10 µsec
Max. Pulse Width (Typ) 1, 4, 8, 9 5 µsec
Max. Energy Density 90 mJ/cm
2
@ 1.064µm, 7ns, 10 Hz
Max. Average Power 0.4 W
Dimensions (H x W x D) 26.5 x 36.0 mm diam
Weight 130 g
Aperture Size 4.0 mm diameter
Aperture Area Size : 0.16 cm
2
FOOTNOTES FOR XLE4 SERIES SPECIFICATIONS:
1 Load capacitance must be

13 pF, excluding the supplied BNC to DB- 15 “Smart Interface” coaxial
cable.
190 Assuming 90 mJ/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.
190 At constant power.
4 To maintain indicated calibration, sensitivity must be de-rated for longer pulses.
5 Calibrated at: 400 µJ, 10 Hz, @1.064 µm, 7 ns pulse (FWHM), semi-Gaussian beam profile, energy
applied to 80% of aperture, loaded into 1 M

/ 13 pfd.
6 For values other than calibration wavelength a typical value is recommended but not traceable to NIST.
7 Excludes non-linearities.
8 Duration at base of pulse. Divide by 2 for FWHM (Full Width at Half Maximum) duration.
9 Loaded into 1 M

/ 13 pfd.