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- W22684587 abstract "Laser technology plays a crucial role in our every day life; in fact, it opens tous new windows and interesting horizon of science. In this respect, Nd:YAG isa crystal which is used as a lasing medium for solid-state lasers. Nd:YAGlasers typically emit light with a wavelength of 1064 nm in the infrared .However, there are also transitions near 940,1120 ,1320, and 1440 nm.Nd:YAG lasers operate in both pulsed and continuous mode. In this masterthesis project, a solid-state Nd:YAG laser using diode laser source was built.The project consisted of two parts. The first part is based on a mathematicalsimulation using a MATLAB modelling. The target of this simulation was todetermine graphs for the particles population in multiple gain media like thefour-layer Nd:YAG laser, and some environmental coefficients were alsoincorporated in this modelling. The differential equations describe the population of electrons in the according energy level of the Nd :YAG . Theyalso show the output intensity of the laser. The obtained graphs described thepopulation inversion in the energy levels inside of the Nd :YAG. Thecharacteristics of the intensity output of the laser, during the transient time,can not be monitored by the experimental setup, therefore this was donethrough the MATLAB simulation. In the second part, a CW diode-pumpedsolid-state laser was constructed . As a laser gain medium, a Nd:YAG crystalwith 1 % Nd doped, lased at 1064nm , was used. 1 Watt L808P1WJ diodelaser, with thermoelectric cooler, was used to excite the Nd-YAG rod . TheNd:YAG is still very inefficient in the conversion of input energy, typically theNd :YAG lasers which are found to achieve only 5 to 1 0% efficiency. Lightfrom the pump laser is generated by the laser diode driver (thorlab PRO 800-with LOC & TEC). The dimension of the Nd-YAG was 5mm diameter x 5mmlength, while the mirror property of HT>99.9% @ 808nm and R>95 @ 1 064nmwas used . The Monochromator was used to detect the output wavelength ofthe laser produced. An electrical efficiency of 10.67 % was realized. Theoptical to optical efficiency is 19.2, with the slope efficiency of 20.2%.Although the optical to optical efficiency and slope efficiency were rather low,the electrical efficiency was considerable." @default.
- W22684587 created "2016-06-24" @default.
- W22684587 creator A5082781296 @default.
- W22684587 date "2009-05-01" @default.
- W22684587 modified "2023-09-27" @default.
- W22684587 title "Design And Development Of 1064nm Nd: Yag Laser From 808nm Diode Laser Source" @default.
- W22684587 hasPublicationYear "2009" @default.
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