Abstract

We demonstrate the third-order nonlinear optical properties of Cr4+:Y3Ga5O12 (Cr4+:YGG) and Q-switched lasers with Cr4+:YGG as the saturable absorber for the first time to our knowledge. The third-order nonlinear properties, including the optical Kerr nonlinearity and saturable absorption, were systematically measured and analyzed in detail by using a Z-scan technique. The measured data show that Cr4+:YGG has a large nonlinear refractive index, ground-state absorption cross section, and excited-state absorption cross section in contrast to Cr4+:Y3Al5O12 (Cr4+:YAG). With a Nd:YGG crystal as the gain medium and a Cr4+:YGG crystal as the saturable absorber, the passively Q-switched laser was performed. The shortest pulse width and largest pulse energy were achieved at the absorbed pump power of 8 W with the values of 9.1 ns and 26.1 μJ, respectively, corresponding to the average output power of 0.87 W and peak power of 2.9 kW. The results indicate that Cr4+:YGG is an available and promising optical switcher for pulsed lasers.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Energy enhancement of mixed Nd:LuYSGG crystal in passively Q-switched lasers

Baolin Wang, Li Tian, Haohai Yu, Huaijin Zhang, and Jiyang Wang
Opt. Lett. 40(13) 3213-3216 (2015)

Third-order nonlinearity and saturable absorbed performance of Cr4+:Gd3Ga5O12 crystal

Yiran Wang, Zhitai Jia, Xiancui Su, Baitao Zhang, Ruwei Zhao, Xutang Tao, and Jingliang He
Opt. Mater. Express 6(8) 2600-2606 (2016)

Passively Q-switched Pr:YLF laser with a Co2+:MgAl2O4 saturable absorber

Maxim Demesh, Daniel-Timo Marzahl, Anatol Yasukevich, Viktor Kisel, Günter Huber, Nikolay Kuleshov, and Christian Kränkel
Opt. Lett. 42(22) 4687-4690 (2017)

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 (4)

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

Equations (6)

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