Title :
Dual femtosecond laser based multiheterodyne low coherence interferometry
Author :
Kray, Stefan ; Spöler, Felix ; Först, Michael ; Kurz, Heinrich
Author_Institution :
Inst. of Semicond. Electron., RWTH Aachen Univ., Aachen, Germany
Abstract :
We present a high-speed, high-resolution, non-mechanical time-domain method for low coherence interferometry, utilizing multiheterodyne detection via two mode-locked femtosecond lasers. Tomographic depth sensing over 150 mm with 5.9 kHz scanning rates and 8 mum depth resolution is demonstrated.
Keywords :
heterodyne detection; image resolution; laser beams; laser mode locking; light interferometry; optical pulse generation; optical tomography; depth 8 mum; dual femtosecond laser; frequency 5.9 kHz; high-resolution image; high-speed technique; mode-locked laser; multiheterodyne low-coherence interferometry; nonmechanical time-domain method; tomographic depth sensing; Coherence; Frequency; High speed optical techniques; High-resolution imaging; Image resolution; Laser mode locking; Optical imaging; Optical interferometry; Signal resolution; Ultrafast optics; (040.2840) Heterodyne; (110.3175) Interferometric imaging; (170.4500) Optical Coherence Tomography;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
