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Controllable lasing behavior enabled by compound dielectric waveguide grating structures.

Zhenqing Zhang, Yunhui Li, Wenxing Liu

|August 25, 2016

Summary

This summary is machine-generated.

Researchers developed a new method to enhance photonic band-edge lasers by tuning the filling factors of compound dielectric waveguide gratings. This approach offers flexible control over lasing threshold and intensity for improved laser performance.

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Area of Science:

Optics and Photonics
Materials Science

Background:

Photonic density of states (PDOS) is crucial for photonic band-edge laser performance.
Conventional methods to enhance PDOS involve increasing refractive index contrast or photonic crystal periodicity.

Purpose of the Study:

To propose a novel approach for achieving a high-Q band edge mode in active compound dielectric waveguide gratings (CWDG).
To demonstrate flexible tuning of lasing threshold and intensity by modifying CWDG parameters.

Main Methods:

Utilized active compound dielectric waveguide gratings (CWDG) to engineer the photonic density of states.
Investigated the effect of varying filling factors within the CWDG structure.

Main Results:

Successfully achieved a high-Q band edge mode using the proposed CWDG design.
Demonstrated flexible tunability of lasing threshold and intensity by altering the filling factors.
The CWDG design effectively improves the performance of electrically pumped photonic band-edge lasers.

Conclusions:

The proposed CWDG approach offers a new pathway to optimize photonic band-edge lasers.
Tuning filling factors provides a versatile method for controlling laser characteristics.
This design shows significant potential for advancing electrically pumped laser technology.