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Electrically Tunable Nd:YAG waveguide laser based on Graphene.

Linan Ma¹, Yang Tan¹, Shavkat Akhmadaliev²

¹School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle Physics and Particle Irradiation (Ministry of Education) Shandong University Shandong, Jinan, 250100, China.

Scientific Reports

|November 12, 2016

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We developed a tunable hybrid graphene-Nd:YAG waveguide laser. Electrical control of graphene modulated laser output between continuous wave and pulsed modes, demonstrating novel electro-optic and heating applications.

Area of Science:

Optoelectronics
Materials Science
Laser Physics

Background:

Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) lasers are crucial in various applications.
Graphene's unique electro-optic and thermal properties offer potential for laser modulation.
Developing tunable and switchable waveguide lasers is an active research area.

Purpose of the Study:

To demonstrate a novel hybrid waveguide laser combining graphene and Nd:YAG.
To exploit graphene's electro-optic and Joule heating effects for laser control.
To achieve electrical tuning of laser output between continuous wave and pulsed states.

Main Methods:

Fabrication of a Nd:YAG cladding waveguide using ion irradiation.
Transfer of multi-layer graphene onto the waveguide surface as a saturable absorber.

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Integration of graphene-based electrodes for electrical control and heating.

Main Results:

Successful Q-switched pulsed laser oscillation in the hybrid waveguide.
Electrical switching of the laser between on and off states via graphene.
Electrical tuning of laser operation between continuous wave and nanosecond pulsed modes.

Conclusions:

The hybrid graphene-Nd:YAG waveguide laser is tunable and switchable via electrical control.
Graphene's electro-optic and Joule heating effects are effectively utilized for laser modulation.
This work presents a promising platform for advanced optoelectronic devices.