Miniaturized diode laser module emitting green light at 532 nm with a power of more than 900 mW for next-generation holographic displays

• Published in: Optical review (Tokyo, Japan) Vol. 23; no. 1; pp. 141 - 145
• Main Authors: Hofmann, Julian, Blume, Gunnar, Jedrzejczyk, Daniel, Eppich, Bernd, Feise, David, Kreutzmann, Sabrina, Sahm, Alexander, Paschke, Katrin
• Format: Journal Article
• Language: English
• Published: Japan The Optical Society of Japan 01-02-2016
• Subjects: Atomic; Japan; Laser Display and Lighting Conference (LDC’15); Lasers; Microwaves; Molecular; Optical and Plasma Physics; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; Quantum Optics; RF and Optical Engineering; Special Section: Regular Paper; Yokohama; Second harmonic generation; 3D holographic displays; Master oscillator power amplifier; Green laser source
• ISSN: 1340-6000; 1349-9432
• DOI: 10.1007/s10043-015-0149-7

We present a micro-integrated laser module based on an amplified diode laser and second harmonic generation which is a promising candidate for a green light source in next-generation 3D holographic displays. The light emitted by the amplified laser has a wavelength of 1064 nm, reaches a power up to 8.2 W and has a long coherence length of >400 m. For second harmonic generation, we tested two geometries of periodically poled lithium niobate crystals in single pass: a bulk crystal and a planar waveguide crystal. With the planar waveguide crystal, we achieve an output power >900 mW and a coherence length >20 m at a wavelength of 532 nm.