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The frequency tuning of a vertical‐cavity surface‐emitting laser through current injection is reported herein. This was achieved by integrating an AlGaAs graded‐index p–n‐modulator diode with a double‐hetero GaAs/AlGaAs laser diode in a vertical cavity formed by an AlAs/AlGaAs‐Bragg reflector and a metallic mirror. Experimental results show an obtained gradient of frequency shift up to 0.93 GHz/mA by the modulator current. This effect is at present restricted to approximately 40 mA due to thermal effects. A theoretical model based on the plasma effect and thermal effects agrees with the experimental values and predicts a maximum value for the gradient of frequency shift of 1.15 GHz/mA with the presented structure.
Published in:
Applied Physics Letters
(Volume:62
,
Issue:
3
)
Date of Publication: Jan 1993
- Page(s):
- 219 - 221
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.108998
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jan 1993
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