Miniaturised master‐oscillator power‐amplifier emitting a single longitudinal mode with more than 300 mW at 647 nm. Issue 5 (1st October 2016)

• Record Type: Journal Article
• Authors: Blume, Gunnar; Pohl, Johannes; Feise, David; Wiedmann, Jörg; Matalla, Matthias; John, Wilfred; Ressel, Peter; Kreuzmann, Sabrina; Ginolas, Arnim; Sahm, Alexander; Johne, Pia; Jendrzejewski, Maik; Kürbis, Christian; Hofmann, Julian; Eppich, Bernd; Erbert, Götz; Paschke, Katrin
• Is Part Of: IET optoelectronics. Volume 10:Issue 5(2016)
• Page Start: 174
• Page End: 178
• Publication Date: 2016-10-01
• Subjects: distributed Bragg reflector lasers -- ridge waveguides -- waveguide lasers -- optical pulse shaping -- laser beams -- cadmium compounds -- manganese compounds -- optical isolators -- power amplifiers -- semiconductor lasers -- aluminium compounds -- gallium arsenide -- gallium compounds -- indium compounds; miniaturised master‐oscillator power‐amplifier -- single longitudinal mode -- red‐emitting MOPA -- optical output power -- distributed Bragg reflector ridge waveguide laser -- light shaping -- microlenses -- miniaturised Faraday isolator -- truncated tapered power amplifier -- diffraction‐limited beam -- sealed butterfly package -- AlGaAs‐AlGaInP‐GaInP‐AlGaInP‐AlInP -- CdMnTe; Optoelectronics -- Periodicals; 621.36
• DOI: 10.1049/iet-opt.2015.0122
• Languages: English
• ISSNs: 1751-8768

Abstract

Abstract : A miniaturised red‐emitting master‐oscillator power‐amplifier (MOPA) was developed. The MOPA emits a single longitudinal mode with a linewidth below 10 MHz and an optical output power of more than 300 mW at a wavelength of about 647 nm. The master‐oscillator is a distributed‐Bragg‐reflector ridge‐waveguide laser which provides the single mode with an output power of about 40 mW. The light is shaped by micro‐lenses and guided through a miniaturised CdMnTe‐Faraday isolator as well as a truncated tapered power amplifier; it is reshaped again afterwards to produce an almost circular, nearly diffraction‐limited beam. The total length of the MOPA is below 50 mm, which fitted into a sealed butterfly package with a footprint of about 20 cm 2 .