Beam combining device for multi-spectral laser diodes

Details Beam combining device for multi-spectral laser diodes Beam combining device for multi-spectral laser diodes

2006-07-25

2006-07-25

Lavarias, Arnel C. (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C359S350000, C359S618000, C356S004010

Reexamination Certificate

active

07081978

ABSTRACT:
A system and method for combining a predetermined number of laser beams. The system (30) includes a collimating lens (34) for receiving and collimating the laser beams and a holographic device (36) positioned to receive beams from the collimating lens (34) and output beams which are co-aligned. The holographic device (36) includes a predetermined number of holographic optical elements (46, 48, 50), wherein each holographic optical element (46, 48, 50) is designed for a particular wavelength of the laser beams. In the preferred embodiment, the holographic optical elements are volume holograms, and the system further includes a blazed grating (38) positioned between the collimating lens (34) and the holographic device (36) to account for variations in the wavelengths of the laser beams due to environmental conditions.

REFERENCES:
patent: 5260828 (1993-11-01), Londono et al.
patent: 5790242 (1998-08-01), Stern et al.
patent: 6449066 (2002-09-01), Arns et al.
patent: 6608677 (2003-08-01), Ray et al.
patent: 6633367 (2003-10-01), Gogolla
patent: 6738130 (2004-05-01), Chen
patent: 6775065 (2004-08-01), Hayashi et al.
patent: 2002/0181035 (2002-12-01), Donoghue

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