en لیزرها، تقویت کننده‌‏های اپتیکی و اپتیک لیزر Lasers, Optical Amplifiers, Laser Optics پژوهشي Research <span style="font-size:11pt"><span new="" roman="" style="font-family:" times=""><span style="font-weight:bold">In this research, an attempt is made to approach a specific type of carbon, such as graphene or carbon nanotubes by using pulsed laser ablation technique in deionized water environment with changing the laser factors such as wavelength and fluence. Nd:YAG laser with two wavelengths of 1064 and 532 nm and three fluence of 0.8, 1 and 1.2 J/cm² were selected that number of pulses was 5000 with a frequency of 10 Hz to be irradiated on the graphite target at about 10 minutes. The medium was distilled water. Graphite was located in the 40 ml of distilled water.</span></span></span><br> <span style="font-size:10pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:11.0pt">The effects of wavelength and fluence of the laser have been experimentally investigated on types of carbon characteristics with different analysis such as Raman scattering spectrum, FE-SEM images, UV&ndash;Vis-NIR spectrum and X-ray diffraction (XRD). By using the mentioned analysis, the type of synthesized nano carbon is studied. </span></b></span></span></span></span><br> <span style="font-size:10pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span new="" roman="" style="font-family:" times=""><b><span style="font-size:11.0pt">This study evaluates the effects of the pulse energy and laser wavelength on properties of synthesized carbon nanoparticle in laser ablation method in medium of distilled water.</span></b></span></span></span></span><br> <br> &nbsp; pulsed laser ablation, carbon nanoparticles, graphite, graphene nanosheets 93 102 http://ijop.ir/browse.php?a_code=A-10-960-1&slc_lang=en&sid=1 Reza Pourahmad reza.poorahmadi@gmail.com 10031947532846005458 10031947532846005458 No Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran Sheila Shahidi sheila.shahidi@gmail.com 10031947532846005459 10031947532846005459 Yes Department of Textile, Arak Branch, Islamic Azad University, Arak, Iran Amirhossein Sari sari@srbiau.ac.ir 10031947532846005460 10031947532846005460 No Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran Mohammadreza Hantezadeh hanteh@srbiau.ac.ir 10031947532846005461 10031947532846005461 No Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran