High Power Diode Lasers - Center for Biomedical Optics and New ...

Others solutions to improve the brightness (2) :
internal approach
The index guided tapered laser bar
30 µm
15 µm
- 8W 10A, FWHM// 5° à 4.5W,
R 2 =1%, GEC EL-99
200 µm 1800 µm
The gain guided tapered laser
100 µm 1900 µm
- 2.2 W 4 A FWHM// 0.24° M²=2.2, R2= 0.05%,
θ 200 µm
Fraunhofer SPIE-98
- 25 lasers bar, 25W 50A, M²=2.6 / emitter,
Ipol
Monomode lateral section :
ridge
Fraunhofer IEEE-PTL99