Single-mode InGaAsP/InP BH lasers based on high-order slotted surface gratings.
Opt Lett
; 49(2): 286-289, 2024 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-38194549
ABSTRACT
A single-mode InGaAsP/InP buried heterostructure (BH) laser based on high-order slotted surface gratings has been fabricated. The introduction of surface slotted grating can simplify the fabrication process of single-mode BH lasers notably. The laser shows a good single-mode emission performance, with larger than 30â
dB side-mode suppression ratio (SMSR) when the current is between 200 and 400â
mA. Calculations show that the gain coupling mechanism plays a key role for the slot grating to select the emission wavelength. The linewidth of the laser is measured. The fitted Gaussian and Lorentzian linewidths are 1500 and 550â
kHz, respectively.
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Ano de publicação:
2024
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Article