Title :
Speckle phenomena in pulsed broad-area vertical-cavity surface-emitting laser emission under different driving and illumination conditions
Author :
Riechert, Falko ; Lemmer, Uli ; Peeters, Michael ; Fischer, Ingo ; Verschaffelt, G. ; Bastian, Georg
Author_Institution :
Karlsruhe Univ., Karlsruhe
Abstract :
We have investigated the speckle contrast using different configurations: we place the screen either in the imaged near-field or in the far-field of the VCSEL´s emission whereas the CCD is placed in the near-or the far-field of the screen. The measured speckle contrast is strongly dependent on both the configuration and the driving conditions of the VCSEL.
Keywords :
CCD image sensors; lighting; speckle; surface emitting lasers; CCD image sensor; VCSEL emission; driving; illumination; pulsed broad-area emission; speckle contrast; vertical-cavity surface-emitting laser emission; Adaptive optics; Current measurement; Humans; Laser theory; Lighting; Optical pulses; Pulse measurements; Speckle; Surface emitting lasers; Vertical cavity surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386030
