Diode laser apparatus with FAC lens out-of-plane beam steering

US10833482B2 · kind B2 · utility

Assignee

• nLIGHT, Inc. · US

Inventors

• Zhigang Chen · Campbell, US
• Manoj Kanskar · Portland, US
• Shuang Li · Vancouver, US
• Jim Zhang · Poway, US
• Mark DeFranza · Vancouver, US
• David Martin Hemenway · Beaverton, US
• Eric Martin · Vancouver, US
• Jay Small · Vancouver, US

Key dates

• Filing date: Feb 6, 2019
• Grant date: Nov 10, 2020
• Expiry date: Feb 6, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4025
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Apparatus include a first laser diode situated to emit a beam from an exit facet along an optical axis, the beam as emitted having perpendicular fast and slow axes perpendicular to the optical axis, a first fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the first laser diode, a second laser diode situated to emit a beam from an exit facet of the second laser diode along an optical axis parallel to the optical axis of the first laser diode and with a slow axis in a common plane with the slow axis of the first laser diode, and a second fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet of the second laser diode and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the second laser diode.