Gentec-EO QE and XLE4 - Manual (Page 5)

QE Series Joulemeter Instruction Manual Version 3.0 April 2014 5
1 GENERAL INFORMATION
1.1 INTRODUCTION
The Gentec-EO QE Series is a robust line of high performance and high accuracy pyroelectric
joulemeters. Each modular unit is built for durability, compactness and ease of operation.
The QE optical absorber exhibits high damage thresholds and can operate at high rep-rates. The
QE series can be
used to even higher energy levels with QED attenuator / diffuser.
The QE Series benefits from the use of a DB-
15 male, “Smart Interface” connector, containing an
EEPROM (Erasable Electrical Programmable Read-Only Memory) programmed with the
calibration sensitivity, the spectral correction factors at different wavelengths and other data
relating to the specific QE Series joulemeter head. This connector permits the monitor to
automatically adjust to the characteristics of the joulemeter being connected.
The C0 version of the QE series (with BNC connector) does not have the “Smart Interface”
function. These joulemeters cannot be used with monitor. They must be used with an
oscilloscope or an OEM acquisition system.
All QE Serie are also available with the the INTEGRA USB Connector. This option only needs a
Computer or tablet PC using the PC-GENTEC-EO. It also a Smart Interface programmed with
the calibration sensitivity, the spectral correction factors at different wavelengths and other data
relating to the specific QE Series joulemeter head.
Every QE Series joulemeter features high intrinsic responsivity and high insensitivity to
electromagnetic interference.
The QE Series also offers an exceptionally wide dynamic range and permits energy
measurement from UV to far IR.
QE Series joulemeters are designed for user-friendly energy measurement of pulsed lasers with
monitor.
QE Series joulemeters require no power source. They can also be used with 1 M
 1 input
impedance oscilloscopes 2 (or fast chart recorders). The calibrated V/J sensitivity is documented
in the calibration certificate of each unit. The spectral correction of this sensitivity is also
documented in the “Personal wavelength correction” certificate.
Each probe 3 also includes a standard optical stand and post. An appropriate damage test target
is provided, as a safety precaution, for all QE models.
1 The capacitance of the cable linking the joulemeter to the electronic readout and the readout input
impedance (capacitance and resistance) constitute the total impedance load seen by the detector. The
total load capacitance, excluding the integral cable should be

30 pfd.
2 A DB-15 to BNC adaptor is required.
3 For the CO version, the post and stand are optional.