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Sánchez Brea, Luis Miguel ; Torcal Milla, Francisco José ; Salgado Remacha, Francisco Javier ; Morlanes Calvo, Tomás ; Jiménez Castillo, Isidoro ; Bernabeu Martínez, Eusebio | The Optical Society Of America | 2010-06-10We present a collimation technique based on a double grating system to locate with high accuracy an emitter in the focal plane of a lens. Talbot self-images are projected onto the second grating producing moiré interferences. By means of two pho[...]texto impreso
Alonso Fernández, José ; Crespo Vázquez, Daniel ; Jiménez Castillo, Isidoro ; Bernabeu Martínez, Eusebio | SPIE--The International Society for Optical Engineering | 2005An all optical autofocus has been designed and tested for tight line width control in a high NA laser photoplotter system. The laser system is based in a GaN semiconductor laser with power 30 mW and wavelength 405 nm. The advantage of using this[...]
