Packaged laser diode array system and method with reduced asymme

Details Packaged laser diode array system and method with reduced asymme Packaged laser diode array system and method with reduced asymme

1997-11-03

2000-03-28

Davie, James W.

Coherent light generators

Particular temperature control

Heat sink

372 34, 372109, H01S 3043

Patent

active

060440961

ABSTRACT:
A system and method for operating a high power laser diode device with high efficiency coupling of a laser diode bar. The laser diode bar and a micro-cylinder lens are vertically oriented in a device package, such that the array axis of the laser bar and the longitudinal axis of the micro-cylinder lens are aligned substantially parallel to a gravity vector. In the two different embodiments disclosed, either initial collimation of the fast-axis divergence or, alternatively, initial collimation of both the fast-axis and slow-axis divergences take place before beam reformatting via a beam array turning mirror. Additionally, the vertical orientation of these components is combined with methods of compensating for the bending or "smile" of the laser diode bar to provide for optimal output beam coupling, resulting in a uniform far field intensity distribution.

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Yamaguchi et al. entitled "Collimation of emissions form a high-power multistripe laser-diode bar with multiprism array coupling and focusing to a small spot" Optical Society of America, vol. 20, No. 8, Apr. 15, 1995.

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