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

被引：15

作者：

Azkargorta, J. ^{[1
]}

Iparraguirre, I. ^{[1
]}

Bettinelli, M. ^{[2
]}

Cavalli, E. ^{[3
]}

Barredo-Zuriarrain, M. ^{[1
]}

Garcia-Revilla, S. ^{[1
,4
,5
]}

Balda, R. ^{[1
,4
,5
]}

Fernandez, J. ^{[1
,4
,5
]}

机构：

[1] Univ Basque Country, UPV EHU, Escuela Super Ingn, Dept Fis Aplicada 1, Bilbao 48013, Spain

[2] Univ Verona, Lab Solid State Chem, DB, I-37134 Verona, Italy

[3] Univ Parma, Dipartimento Chim, I-43121 Parma, Italy

[4] CSIC UPV EHU, Ctr Phys Mat, San Sebastian 20018, Spain

[5] Donostia Int Phys Ctr, San Sebastian 20018, Spain

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 22期

关键词：

DEPENDENCE; MODES;

D O I：

10.1364/OE.22.027365

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Laser 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. (C) 2014 Optical Society of America

引用

页码：27365 / 27372

页数：8

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