Abstract
High power and good beam quality of two-dimensional bottom-emitting vertical-cavity surface-emitting laser array with GaAs microlens on the substrate is achieved. Uniform and matched convex microlens is directly fabricated by one-step diffusion-limited wet-etching techniques on the emitting windows. The maximum output power is above 1W at continuous-wave operation at room temperature, and the far-field beam divergence is below 6.6°at a current of 4A. These properties between microlens-integrated and conventional device at different operating current are demonstrated.
Original language | English |
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Pages (from-to) | 23900-23905 |
Number of pages | 6 |
Journal | Optics Express |
Volume | 18 |
Issue number | 23 |
DOIs | |
State | Published - Nov 8 2010 |