Abstract

The saturable optical absorption properties of PbSe core nanocrystals (NCs), and their corresponding PbSePbS coreshell and PbSePbSexS1-x core∕alloyed-shell NCs, were examined at λ=1.54μm. Saturation intensities of approximately 100MWcm2 were obtained. The NCs act as passive Q switches in near-infrared pulsed lasers. Q-switched output pulse energies up to 3   mJ, with a pulse duration of 40–55 ns were demonstrated. Analysis of the optical transmission versus pulse light intensity was carried out according to a model that includes ground-state as well as excited-state absorption. For pulses 10  ns long, the NCs act as fast saturable absorbers. The theoretical fits yield a ground-state absorption cross section of 10161015cm2, an excited-state absorption cross section of σes1016cm2, and an effective lifetime of τeff5×1012  s.

© 2006 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Superior multiphoton absorption properties in colloidal Mn-doped CsPbCl3 two-dimensional nanoplatelets

Tingchao He, Junzi Li, Xin Qiu, Shuyu Xiao, and Xiaodong Lin
Photon. Res. 6(11) 1021-1027 (2018)

Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-μm laser

Yuri V. Volk, Igor A. Denisov, Alexander M. Malyarevich, Konstantin V. Yumashev, Olga S. Dymshits, Alexander V. Shashkin, Alexander A. Zhilin, Uk Kang, and Kyeong-Hee Lee
Appl. Opt. 43(3) 682-687 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription