US 2015/0092802 A1Published application

Optically pumped vertical external-cavity surface-emitting laser device

AssigneeKoninklijke Philips N.V.

InventorsStephan Gronenborn, Michael Miller

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Abstract

The present invention relates to an optically pumped vertical external-cavity surface-emitting laser device comprising at least one VECSEL (200) and several pump laser diodes (300). The pump laser diodes (300) are arranged to optically pump the active region (108) of the VECSEL (200) by reflection of pump radiation (310) at a mirror element (400). The mirror element (400) is arranged on the optical axis (210) of the VECSEL (200) and is designed to concentrate the pump radiation (310) in the active region (108) and to form at the same time the external mirror of the VECSEL (200). The proposed device avoids time consuming adjustment of the pump lasers relative to the active region of the VECSEL and allows a very compact design of the laser device.

Claims13

Dependent claims

An optically pumped vertical external-cavity surface-emitting laser device comprising at least one vertical external-cavity surface-emitting laser and several pump laser diodes,

said vertical external-cavity surface-emitting laser comprising
a layer stack forming at least a first end mirror and an active region of the vertical external-cavity surface-emitting laser, and
a second end mirror forming an external cavity of the vertical external-cavity surface-emitting laser,
said pump laser diodes being arranged to optically pump said active region by reflection of pump radiation at a mirror element,
wherein said mirror element is arranged on an optical axis of the vertical external-cavity surface-emitting laser and is designed to concentrate said pump radiation in the active region and to form at the same time the second end mirror of the vertical external-cavity surface-emitting laser, wherein the pump laser diodes are arranged to direct the pump radiation substantially parallel to the optical axis towards the mirror element such that a pump spot provided by the pump laser diodes is automatically aligned with an optical mode of the vertical external-cavity surface-emitting laser.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/396,655Filed 11 Apr 2013
Priority: 26 Apr 2012
Published: 2 Apr 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01S 5/041
Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams: optical pumping
G02B 17/06
Catoptric systems, e.g. image erecting and reversing system: using mirrors only , i.e. having only one curved mirror
H01S 5/141
External cavity lasers: using a wavelength selective device, e.g. a grating or etalon
H01S 5/18397
Having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]: plurality of active layers vertically stacked in a cavity for…