Answers are grounded in this paper and cite their sources.
A 600 μm wide GaAlAs travelling wave amplifier operating at 860 nm generated 3.3 W under CW saturated operation. The far field emission pattern was diffraction limited with a 0.08° angular width.
No takes yet. Share an insight, caveat, or question.
Goldberg et al. (1992) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: