TY - CHAP A1 - Hühnlein, Kristof A1 - Tschirpke, Katrin A1 - Hellmann, Ralf T1 - Optimisation of laser cutting using design of experiment - A comparative study of cutting thin ceramic layers using a fibre laser and a CO2 laser T2 - Physics procedia T2 - 6th international conference on laser assisted net shape engineering KW - Laserschneiden Y1 - 2014 SN - 1875-3892 VL - 5 IS - Part B SP - 243 EP - 252 ER - TY - JOUR A1 - Risch, Anna A1 - Hühnlein, Kristof A1 - Knöll, Jürgen A1 - Hellmann, Ralf T1 - Picosecond and nanosecond pulsed laserscribing on transparent conductive indium tin oxide JF - Journal of Material processing technolgies JF - Proceedings of the XXIV international scientific conference Miskolc, Ungarn KW - Laserbearbeitung Y1 - 2014 SN - 0924-0136 ER - TY - JOUR A1 - Bochtler, Ulrich A1 - Hellmann, Ralf A1 - Kaloudis, Michael T1 - Neuartige UV-Lichtquelle auf Leuchtdiodenbasis, Packaging und Hybridschaltungen JF - PLUS KW - Lumineszenzdiode Y1 - 2010 IS - 2 PB - Leuze-Verlag ER - TY - CHAP A1 - Glaab, Johannes A1 - Hellmann, Ralf T1 - Germicidal potential of ultraviolet-LED emitting different wavelength for the inactivation of indigenous coliform bacteria T2 - Water research conference, Lissabon, Portugal KW - Lumineszenzdiode KW - Kolibakterium Y1 - 2014 ER - TY - CHAP A1 - Rosenberger, Manuel A1 - Belle, Stefan A1 - Hellmann, Ralf T1 - Optical interrogation of bragg grating sensors using tunable fibre based bandpass filter T2 - Proceedings of the 20st international science conference, Mittweida KW - Bragg-Reflektor KW - Sensor Y1 - 2014 ER - TY - CHAP A1 - Belle, Stefan A1 - Scheurich, Steffen A1 - Hellmann, Ralf T1 - Interrogation water content in organic solvents by planar bragg grating sensors T2 - Proceedings SENSOR KW - Bragg-Reflektor KW - Sensor Y1 - 2014 SN - 978-3-9810993-6-2 IS - Vol. II, P3.2 SP - 324 EP - 329 ER - TY - CHAP A1 - Scheurich, Steffen A1 - Belle, Stefan A1 - Hellmann, Ralf A1 - So, Sik A1 - Sparrow, Ian A1 - Emmerson, Greg T1 - Application of a silica-on-silicon planar optical waveguide. Bragg grating sensor for organic liquid compound detection T2 - SPIE Optics an optoelectronics conference, Proceedings of SPIE, Vol. 7356, Prag, CR KW - Bragg-Reflektor KW - Sensor Y1 - 2014 SN - 978-0819476302 IS - 7356 ER - TY - CHAP A1 - Scheurich, Steffen A1 - Belle, Stefan A1 - Hellmann, Ralf A1 - So, Sik A1 - Sparrow, Ian A1 - Emmerson, Greg T1 - Planar optical waveguide bragg grating chemical sensor for online process control T2 - 3rd integrated optics - sensors, sensing structures and methodes Korbielow, PL KW - Bragg-Reflektor KW - Sensor Y1 - 2014 ER - TY - JOUR A1 - Hock, Klaus A1 - Adelmann, Benedikt A1 - Hellmann, Ralf T1 - Comparative study of remote fiber laser and water-jet guided laser cutting of thin film metal sheets JF - Physics procedia KW - laser KW - Laserschneiden Y1 - 2012 VL - 39 SP - 225 EP - 231 ER - TY - CHAP A1 - Kalmár, László A1 - Hellmann, Ralf A1 - Régert, Tamás A1 - Varga, Zoltan T1 - Numerical investigation of heat transport procedure in high power LED modules T2 - Proceedings of the XXVI International MicroCAD Conference, Miskolc (Hungary) KW - heat transport procedure KW - Lumineszenzdiode KW - Wärmeübertragung Y1 - 2012 SP - 43 EP - 46 ER -