Abstract

We report experimental demonstration of graphene mode-locked operation of ${{\rm Tm}^{3 + }}\!:\!{{\rm YLiF}_4}$ (YLF) and ${{\rm Tm}^{3 + }}\!:\!{{\rm KY}_3}{{\rm F}_{10}}$ (KYF) lasers near 2.3 µm. To scale up the intracavity pulse energy, the cavity was extended, and double-end pumping was employed with a continuous-wave, tunable ${{\rm Ti}^{3 + }}\!:\!{\rm sapphire}$ laser delivering up to 1 W near 780 nm. The extended ${{\rm Tm}^{3 + }}\!:\!{\rm KYF}$ laser cavity was purged with dry nitrogen to eliminate pulsing instabilities due to atmospheric absorption lines, but this was not needed in the case of the ${{\rm Tm}^{3 + }}\!:\!{\rm YLF}$ laser. Once initiated by graphene, stable uninterrupted mode-locked operation could be maintained with both lasers. With the extended cavity ${{\rm Tm}^{3 + }}\!:\!{\rm YLF}$ laser, 921 fs pulses were generated at a repetition rate of 17.2 MHz at 2304 nm. 739 fs pulses were obtained at the repetition rate of 54 MHz from the ${{\rm Tm}^{3 + }}\!:\!{\rm KYF}$ laser at 2340 nm. The corresponding pulse energy and peak power were 2.4 nJ and 2.6 kW for the ${{\rm Tm}^{3 + }}\!:\!{\rm YLF}$ laser, and 1.2 nJ and 1.6 kW for the ${{\rm Tm}^{3 + }}\!:\!{\rm KYF}$ laser. We foresee that it should be possible to generate shorter pulses at higher pump levels.

© 2020 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Upconversion pumping of a 2.3  µm Tm3+:KY3F10 laser with a 1064  nm ytterbium fiber laser

Yagız Morova, Mauro Tonelli, Valentin Petrov, and Alphan Sennaroglu
Opt. Lett. 45(4) 931-934 (2020)

SWCNT-SA mode-locked Tm:LuYO3 ceramic laser delivering 8-optical-cycle pulses at 2.05  µm

Yongguang Zhao, Li Wang, Yicheng Wang, Jian Zhang, Peng Liu, Xiaodong Xu, Ying Liu, Deyuan Shen, Ji Eun Bae, Tae Gwan Park, Fabian Rotermund, Xavier Mateos, Pavel Loiko, Zhengping Wang, Xingguang Xu, Jun Xu, Mark Mero, Uwe Griebner, Valentin Petrov, and Weidong Chen
Opt. Lett. 45(2) 459-462 (2020)

Femtosecond graphene mode-locked Fe:ZnSe laser at 4.4  µm

A. V. Pushkin, E. A. Migal, S. Tokita, Yu. V. Korostelin, and F. V. Potemkin
Opt. Lett. 45(3) 738-741 (2020)

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 (6)

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

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