Title :
Towards ultra-compact optical tweezers without external optics
Author :
Kroner, A. ; Rinaldi, F. ; Kardosh, I. ; Michalzik, R.
Author_Institution :
Optoelectron. Dept., Ulm Univ.
Abstract :
In this paper, demonstration shows that the optical power level necessary for particle trapping can be achieved by lensed VCSELs. Therefore, the next step will be to adopt lensed VCSELs in integrated optical tweezers. Nowadays, commercial optical tweezers are mainly based on Nd:YAG lasers or edge-emitting laser diodes which are either bulky or need careful external beam correction. Here, the use of vertical-cavity surface-emitting lasers (VCSELs) yields various benefits like micrometer size dimensions, a Gaussian output beam and the fabrication of monolithic two-dimensional laser arrays with which multiple tweezers can be easily realized
Keywords :
integrated optics; radiation pressure; solid lasers; surface emitting lasers; Gaussian output beam; Nd:YAG lasers; YAG:Nd; YAl5O12:Nd; edge-emitting laser diodes; external beam correction; integrated optical tweezers; lensed VCSEL; micrometer size dimension; monolithic two-dimensional laser arrays; optical power level; particle trapping; Biomedical optical imaging; Charge carrier processes; Integrated optics; Lenses; Microoptics; Optical refraction; Optical variables control; Resists; Surface emitting lasers; Vertical cavity surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Conference_Location :
Munich
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568409
