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Effects of pumping wavelength and pump density on the random laser performance of stoichiometric Nd crystal powders

AutorAzkargorta, J.; Iparraguirre, I.; Bettinelli, M.; Barredo-Zuriarrain, Macarena; García-Revilla, Sara; Balda, Rolindes ; Fernández, Joaquín
Fecha de publicación2014
EditorOptical Society of America
CitaciónOptics Express 22(22): 27365-27372 (2014)
ResumenLaser slope and threshold properties have been investigated in Nd stoichiometric crystal powders as a function of pump wavelength and pump beam size. Above a given pumped area, the laser slope and the threshold pump energy per unit area are invariant and the known theoretical expressions are well fulfilled. Likewise, the size of the stimulated emission zone as a function of the pump beam area has been measured, also showing a different behavior above or below a given pumped area value which coincides with the one mentioned above. In conclusion, two different operating regimes with different performances are clearly observed as a function of the pump beam area.
URIhttp://hdl.handle.net/10261/136924
DOI10.1364/OE.22.027365
Identificadoresdoi: 10.1364/OE.22.027365
issn: 1094-4087
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