We have developed an optodynamic method for an on-line monitoring of points of electrical-laminations welding. The developed method has allowed us an adaptive laser welding resulting in lower energy consumption during the welding of the stator and rotor laminations. Series of microcontrollers with appropriately developed software enabled an arbitrary modulation of continuous-wave (CW) beam by means of adjustable processing parameters or by triggering of any arbitrary pulses into a single point. The developed system allows the use of both pulsed and CW lasers. A granted Slovenian patent confirms that this subject of optodynamics of laser manufacturing and other processes has reached a stage of technological maturity, which allows the use of the developed knowledge in an industrial environment.
F.33 Slovenian patent
COBISS.SI-ID: 13312027We have developed an ophthalmic laser device that enables an on-line monitoring of the interaction between non-focused laser pulse and the pigment in the iris of the eye. Based on the optodynamic monitoring of pulse-tissue interaction, we designed the real-time control of the laser trabeculoplasty. The first steps towards a prototype device that will significantly improve the safety and efficiency of these treatments have been also done. In addition to the granted Slovenian patent, we applied also and international patent application.
F.33 Slovenian patent
COBISS.SI-ID: 13264667A low-power source, such as a gain-switched laser diode, usually requires several amplification stages to reach sufficient power levels. When operating in burst mode, a correct input burst shape must be determined in order to compensate for gain saturation of all amplifier stages. In this paper we report on closed-form equations that enable saturation compensation in multiamplifier setups, which eliminates the need for an adaptive feedback loop. The theoretical model is then evaluated in an experimental setup.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 14072603For industrial partner Fotona that develops laser medical systems we performed optodynamic investigation of different biomedical applications. Here, a special emphasis was given on the use of lasers in dentistry. We performed an in vitro study in a model of teeth. In such a way we examined the key mechanisms that are responsible for laser cleaning of the root canals. Additionally, we have studied the synchronized delivery of Er:YAG-laser pulses during the vapor-bubbles oscillations. This new approach increases the optodynamic energy-conversion efficiency and, consequently, opens new possibilities for improving the efficiency of dental treatments by lasers.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 14129947A method and apparatus are described for forming a pattern comprising one or more markings on a substrate (6). The method comprises the step of forming each marking by locally heating the substrate (6), for example using a fibre laser (2). A step is also performed of monitoring the temperature of the substrate, e.g. using a temperature sensor (10), whilst each marking is being formed. The method may be used to form a magnetic encoder scale on a stainless steel substrate having a high content of martensitic material. The local heating causes the martensitic material to be transformed into austenitic material. An encoder scale made using the method is also described.
F.32 International patent
COBISS.SI-ID: 12577819