Abstract

An all-fiber clad pumped Raman fiber laser (FL) oscillator with a CW power of 1.2 kW and an efficiency of 85% is presented. To the best of our knowledge, this laser is the highest power and the highest efficiency Raman FL demonstrated in any configuration with brightness enhancement (BE). To the best of our knowledge, it is also the first greater than kilowatt FL of any kind that does not utilize rare-earth doping in the oscillator fiber (all passive fiber). The beam quality (BQ) of the Raman laser was M2=2.75 at 1 kW, and the pump-Stokes BE factor was approximately 7. The laser consists of a specially designed triple-clad fiber which confines the low BQ pump power into the multi-mode inner clad, while generating the Raman signal in the large-mode-area core. The second Stokes is inhibited by selecting the appropriate inner clad-to-core area ratio and by the oscillator’s selective fiber Bragg grating reflectors.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
250 W clad pumped Raman all-fiber laser with brightness enhancement

Yariv Shamir, Yaakov Glick, Matitya Aviel, Avital Attias, and Shaul Pearl
Opt. Lett. 43(4) 711-714 (2018)

Highly efficient all-fiber continuous-wave Raman graded-index fiber laser pumped by a fiber laser

Yaakov Glick, Yariv Shamir, Alexey A. Wolf, Alexandr V. Dostovalov, Sergey A. Babin, and Shaul Pearl
Opt. Lett. 43(5) 1027-1030 (2018)

High-power cladding pumped Raman fiber amplifier with a record beam quality

Yizhu Chen, Tianfu Yao, Hu Xiao, Jinyong Leng, and Pu Zhou
Opt. Lett. 45(8) 2367-2370 (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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Figures (5)

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

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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