1-W single-mode edge-emitting DBR ring oscillators
- 1 April 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 5 (4) , 369-371
- https://doi.org/10.1109/68.212667
Abstract
The distributed Bragg reflector (DBR) ring oscillator, a class of single-mode diode laser that emits high-power, spatially coherent, single-frequency output from a large aperture, is discussed. Specifically an edge-emitting DBR ring oscillator that exhibits single frequency operation to 1 W output from a single facet is discussed. From a second device, the far field radiation pattern is a 0.20 degrees diffraction-limited beam which remains stable and stationary up to 460 mW, measured from an uncoated facet. This device produces over 2.5 W of coherent power into four equal beams and has a threshold current density of 177 A/cm/sup 2/ and a differential quantum efficiency of 63%.Keywords
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