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oapen-20.500.12657-323272021-11-12T16:31:20Z Chapter 9 Laser Pulses Characterization with Pyroelectric Sensors Mazzoni, Marina Capineri, Lorenzo laser pulses pyroelectric sensors laser pulses pyroelectric sensors Hertz Micrometre Polyvinylidene fluoride Power density bic Book Industry Communication::P Mathematics & science::PD Science: general issues There are many industrial and medical applications of CO2 (λ=10.6 μm) and Nd:YAG (λ=1.06 μm) infrared lasers for which the quality of the process are tightly connected to the characteristic of the laser pulse. These two types of lasers deliver pulses with duration, repetition frequency and power that can be controlled by means of a programmable electronic control unit. An open-loop control generally optimize the process performances by availing of a laser system model. However, this method cannot control that during the operation the laser source and the optical delivering system could deteriorate; moreover the laser beam characteristics and laser pulse temporal envelope could change by several factors like power supply variations, optical beam misalignments, dirty deposits on mirrors, changes in laser efficiency and many others . 2019-10-04 14:37:37 2020-04-01T14:06:40Z 2016-08-01 23:55 2019-10-04 14:37:37 2020-04-01T14:06:40Z 2016-12-31 23:55:55 2019-10-04 14:37:37 2020-04-01T14:06:40Z 2020-04-01T14:06:40Z 2010 chapter 612626 OCN: 1030814157 http://library.oapen.org/handle/20.500.12657/32327 eng application/pdf n/a 612626.pdf InTechOpen Laser Pulse Phenomena and Applications 10.5772/13292 10.5772/13292 09f6769d-48ed-467d-b150-4cf2680656a1 6ab207fc-13df-43b9-89b7-7a945f7f636e 7292b17b-f01a-4016-94d3-d7fb5ef9fb79 European Research Council (ERC) 1 226424 FP7 FP7 Ideas: European Research Council FP7-IDEAS-ERC - Specific Programme: "Ideas" Implementing the Seventh Framework Programme of the European Community for Research, Technological Development and Demonstration Activities (2007 to 2013) open access
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There are many industrial and medical applications of CO2 (λ=10.6 μm) and Nd:YAG (λ=1.06 μm) infrared lasers for which the quality of the process are tightly connected to the
characteristic of the laser pulse. These two types of lasers deliver pulses with duration,
repetition frequency and power that can be controlled by means of a programmable
electronic control unit. An open-loop control generally optimize the process performances
by availing of a laser system model. However, this method cannot control that during the
operation the laser source and the optical delivering system could deteriorate; moreover
the laser beam characteristics and laser pulse temporal envelope could change by several
factors like power supply variations, optical beam misalignments, dirty deposits on mirrors,
changes in laser efficiency and many others .
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