Wide ridge pump laser

H - Electricity – 01 – S

Patent

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Details

H01S 5/022 (2006.01) G02B 6/42 (2006.01) H01S 5/22 (2006.01) G02B 6/30 (2006.01) H01S 3/0941 (2006.01) H01S 5/10 (2006.01) H01S 5/14 (2006.01) H01S 5/20 (2006.01) H01S 5/223 (2006.01)

Patent

CA 2395009

A laser pump module has a ridge waveguide chip with a ridge width that is greater than 4 micrometers (µm). This is a relatively wide ridge for this class of laser chips. Specifically, especially for signal lasers, narrow ridge widths are used in order to control lateral and transverse mode shape and size. In the present invention, however, where a chhip is used for pump applications, a wider ridge is used to increase the laser effective gain volume and decrease the loss associated with the lowest order transverse mode to thus maximize the useful power and light that is coupled into the fiber.

L'invention concerne une pompe laser, comprenant une puce de guide d'onde à moulure dont la largeur de moulure est supérieure à 4 micromètres (µm), cette moulure étant relativement grande pour ce type de classe de puces laser. On utilise spécifiquement, notamment pour les lasers à signaux, des largeurs de moulure étroites afin de commander la taille et la forme en mode latéral et transversal. Selon la présente réalisation, lorsqu'on utilise une puce pour des applications de pompe, on utilise une moulure plus large afin d'augmenter le volume de gain efficace du laser, et de réduire la perte associée au mode transversal d'ordre le plus bas, et ainsi optimiser la puissance et la lumière utiles couplées dans une fibre.

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