TY - JOUR N2 - In experiments with short-pulse lasers the measurement control of the energy of the laser pulse is of crucial importance. Generally it is difficult to measure the amplitude of the pulses of short-pulse lasers using electronic devices, their response time being longer than the duration of the laser pulses. The electric response of the detector is still too fast to be directly digitized therefore a peak-hold unit can be used to allow data processing for the computer. In this paper we present a device which measures the energy of UV short (fs) pulses shot-byshot, digitizes and sends the data to the PC across an USB interface. The circuit is based on an analog peak detect and hold unit and the use of fiber optical coupling between the PC and the device provides a significant improvement to eliminate potential ground loops and to reduce conductive and radiated noise as well. The full development is open source and has been made available to download from our web page (http://www.noise.inf.u-szeged.hu/Instruments/PeakHold/). L1 - http://www.czasopisma.pan.pl/Content/90106/PDF/Journal10178-VolumeXX%20Issue2_03.pdf L2 - http://www.czasopisma.pan.pl/Content/90106 PY - 2013 IS - No 2 EP - 190 DO - 10.2478/mms-2013-0016 KW - laser energy KW - optical fiber KW - USB KW - peak-hold KW - UV short pulse KW - open-source A1 - Barna, A. A1 - Földes, I.B. A1 - Gingl, Z. A1 - Mingesz, R. PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2013 T1 - Compact Energy Measuring System for Short Pulse Lasers SP - 183 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/90106 T2 - Metrology and Measurement Systems ER -