Abstract

We present a laser module with dimensions of ${76} \times {43} \times {15}\;{{\rm mm}^3}$ that for the first time to our knowledge realizes a coherent beam combination in such a compact device, using two tapered amplifiers seeded by a distributed Bragg reflector ridge waveguide laser diode operating at 761 nm in a single longitudinal mode. The generated combined optical power is up to 5 W continuous wave with a combing efficiency of 85%. The phase of the system is controlled by the current in the ridge waveguide section of one of the tapered amplifiers. The phase-stabilization process is automated using a reverse hill-climbing algorithm and an ATmega328P microcontroller.

© 2024 Optica Publishing Group

UV generation via periodically poled MgO:LiTaO₃ circular waveguide crystal and diode-based master oscillator power amplifier

Christos Mourikis, Nils Werner, David Feise, Katrin Paschke, and Günther Tränkle
Appl. Opt. 62(19) 5099-5106 (2023)

Multi-stage coherent beam combination of semiconductor optical amplifiers in ready-made fiber couplers

Akira Nagano, Toshiyuki Ihara, Utako Tanaka, and Kazuhiro Hayasaka
Opt. Express 32(5) 6903-6916 (2024)

Bessel-Gauss coherently combined beams

Jan K. Jabczyński
Opt. Express 32(6) 10068-10076 (2024)

Spectral phase effects and control requirements of coherent beam combining for ultrashort ultrahigh intensity laser systems

Yong Cui, Yan-qi Gao, Ze-xi Zhao, Zhong-yang Xu, Ning An, Da-wei Li, Jian-wei Yu, Tao Wang, Guang Xu, Wei-xin Ma, and Ya-ping Dai
Appl. Opt. 55(35) 10124-10132 (2016)

External cavity beam combining of 21 semiconductor lasers using SPGD

Juan Montoya, Steven J. Augst, Kevin Creedon, Jan Kansky, Tso Yee Fan, and Antonio Sanchez-Rubio
Appl. Opt. 51(11) 1724-1728 (2012)