Single-mode Er/Yb fiber MOPA at 1562nm with 302W power and 56% optical efficiency

Turghun Matniyaz; Fanting Kong; Monica T. Kalichevsky-Dong; Liang Dong

doi:10.1117/12.2573781

5 March 2021 Single-mode Er/Yb fiber MOPA at 1562nm with 302W power and 56% optical efficiency

Turghun Matniyaz, Fanting Kong, Monica T. Kalichevsky-Dong, Liang Dong

Proceedings Volume 11665, Fiber Lasers XVIII: Technology and Systems; 116650M (2021) https://doi.org/10.1117/12.2573781
Event: SPIE LASE, 2021, Online Only

Abstract

We have demonstrated a new record of 302W single-mode power from an Er/Yb co-doped fiber master oscillator power amplifier (MOPA) with a record optical efficiency of 56%. This single-mode power is a new record for any lasers in this wavelength range. The previous record of single-mode power from an Er/Yb fiber laser pumped by a 9xx nm diode was 207 W at 1560 nm. The new optical efficiency of 56%, very close to the quantum-limited efficiency of 58.6%, is also a new record for Er/Yb fiber lasers. This new result is made possible mainly due to new fiber development from Nufern and off-resonant pumping of the Er/Yb fiber, which demonstrates further power-scaling potentials of Er/Yb fiber lasers pumped by widely available 9xx nm diodes. We also show that further power scaling is no longer limited by Yb³⁺ parasitic lasing near 1.06μm, but by fiber fuse in the Er/Yb fiber. The Yb³⁺ amplified spontaneous emission (ASE) was found to be negligible in all the cases we tested. Nonetheless, our numerical investigation shows that off-resonance pumping at 915 nm or 940 nm only plays a small role in the above-mentioned negligible ASE. We believe that the major cause may be the high Er³⁺ doping level in the Nufern Er/Yb co-doped fiber. Our results provide significant new insights and will stimulate further power scaling of Er/Yb fiber lasers and amplifiers.

Conference Presentation

Citation Download Citation

Turghun Matniyaz, Fanting Kong, Monica T. Kalichevsky-Dong, and Liang Dong "Single-mode Er/Yb fiber MOPA at 1562nm with 302W power and 56% optical efficiency", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 116650M (5 March 2021); https://doi.org/10.1117/12.2573781

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available