## 1 Introduction
The effect of heat generated by the laser beam indicates that the cutting width and depth proportionally vary to the laser power, thermal stress is dependent on process parameters, and increased speed means a small cutting width, i.e., economy of molten material [9]. [PERSON] et al. used as influencing factors: assistant gas pressure, focusing position, laser power and cutting speed to determine the properties of the cut area using the artificial neural network (ANN) model in order to optimize the cutting parameters. The (ANN) responses and the validation of the results show that the selected parameters determine improved cutting characteristics with an impact on the quality of the cut area and the mechanical aspects [10]. [PERSON] et al. used a YAG laser to apply a Colmonoy-5 layer on carbon steel plates. Laser power processing and scanning speed parameters were varied to observe their effect on microstructural characteristics: microhardness and wear. It was determined that the laser power has a great influence on the HV microhardness, and the simultaneous combination of factors, namely, low laser power and high scanning speed, leads to an increased wear resistance [11]. [PERSON] et al. researched ultra-fast 10 ps pulse lasers to fabricate sharp-edged cutting tools by heat treatment. Thus, it is necessary to round the edges of the cut edges of the WC-Co alloy with the help of the laser due to the high precision and the low heat accumulation. The experiments were performed on the free surfaces of the tools used for cutting which modified the laser parameters: wavelength, fluency and pressure of the assistant gas. The analysis of the tools does not show a change in hardness, and in terms of surface quality results in a very low R\({}_{\text{a}}\) roughness of 0.15 \(\upmu\)m for wavelengths other than 1064 nm (IR) and 532 nm (VIS) [12]. [PERSON] et al. used a CO\({}_{2}\) laser that emits a pulsed light beam onto the methyl polymethacrylate sheets to study the cutting width. The authors optimized the cutting parameters, respectively speed, auxiliary gas pressure, laser power and material thickness. With the help of a microscope they measured the upper and lower cutting width and the Kerf taper, these being considered as output parameters for the cutting process. The influence of the cutting parameters on Kerfwas statistically analyzed with ANOVA dispersion technique. The obtained results show that any increase of the values of the cutting parameters generates a larger cutting width and the increase of the laser speed and power leads to the increase of the Kerr taper [13]. [PERSON] et al. indicated a method of optimizing the laser cutting path to accumulate minimal heat by using a genetic algorithm with neighborhood search. This technique is useful for hardening the surface in the welding process where the working distance and heat accumulation must be optimized to obtain quality parts [14]. [PERSON] et al. highlighted the behavior of the gas flow in the subsonic and supersonic nozzle by analysis with the Nomarsk interferometer. The process of cutting 60 mm thick stainless steel sheets took place with the help of a 6 KW laser. The experiments were performed to observe the effect of the geometric configuration of the nozzles. By varying the stand-off distance, the ability to eliminate the formed melt was determined. The results show that the supersonic nozzle has a capacity to remove the melt at a greater distance [15]. [PERSON] et al. conducted CO\({}_{2}\) laser cutting research on 304 stainless steel to obtain miniatural gears. The cutting experiments were designed according to the Box-Behnken design and performed based on the response technique, with 29 references evaluated by the RSM (response surface) model. The varied parameters were laser power, cutting speed, focal position and cutting gas pressure, while the output parameter measured and calculated the surface roughness R\({}_{\text{a}}\). With the help of ANOVA it was established that the focal position is the most influential parameter [16]. [PERSON] et al.