Coupling of DBR tapered diode laser radiation into a single-mode-fiber at high powers

D. Jedrzejczyk; P. Asbahr; M. Pulka; B. Eppich; K. Paschke

doi:10.1117/12.2036697

12 March 2014 Coupling of DBR tapered diode laser radiation into a single-mode-fiber at high powers

D. Jedrzejczyk, P. Asbahr, M. Pulka, B. Eppich, K. Paschke

Proceedings Volume 8965, High-Power Diode Laser Technology and Applications XII; 89651A (2014) https://doi.org/10.1117/12.2036697
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

In this work, we investigate experimentally coupling of diode laser radiation into a single-mode-fiber (SMF) at high optical power. In particular, nearly diffraction-limited, single-frequency continuous wave (CW) radiation around 1064 nm generated by a distributed Bragg reflector (DBR) tapered diode laser is coupled in a bench-top experiment into an SMF with a core diameter of approx. 6 μm. Misalignment tolerances for efficient SMF coupling are determined through two-dimensional coupling efficiency scans, conducted for an attenuated diode laser beam. The coupling efficiency and the laser beam properties behind the SMF are investigated in dependence on the optical power in front of the SMF. A maximum power ex fiber of 3.5 W at a coupling efficiency of 65 % is reached.

Citation Download Citation

D. Jedrzejczyk, P. Asbahr, M. Pulka, B. Eppich, and K. Paschke "Coupling of DBR tapered diode laser radiation into a single-mode-fiber at high powers", Proc. SPIE 8965, High-Power Diode Laser Technology and Applications XII, 89651A (12 March 2014); https://doi.org/10.1117/12.2036697

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