Title :
High power direct diode laser optical system by planar lightwave circuit modules
Author :
Hasegawa, Kazuo ; Matsubara, Hiroyuki ; Ichikawa, Tadashi ; Maeda, Mitsutoshi ; Itoh, Hiroshi
Author_Institution :
TOYOTA Central R&D Labs. Inc., Nagakute
Abstract :
A direct diode laser (DDL) system has been proposed, consisting of a laser diode (LD), planar lightwave circuit(PLC) and optical fibers. The output from one PLC module is a 320 um times 300 um bundle optical fibers, each fiber having a rectangular core of NA0.3. The output efficiency was 74.2% at the fiber end. This PLC module may be applied as the light source for DDL processing or for the excitation module of a fiber laser.
Keywords :
integrated optics; optical fibres; semiconductor lasers; efficiency 74.2 percent; excitation module; fiber laser; high power direct diode laser optical system; light source; optical fibers; output efficiency; planar lightwave circuit modules; Circuits; Diode lasers; Lenses; Microoptics; Optical design; Optical fibers; Programmable control; Rough surfaces; Shape; Surface roughness; direct diode laser; laser diode bars; microlens; planar lightwave circuit;
Conference_Titel :
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the
Conference_Location :
Acapulco
Print_ISBN :
978-1-4244-1931-9
Electronic_ISBN :
978-1-4244-1932-6
DOI :
10.1109/LEOS.2008.4688685
