Tri-wavelength laser generation based on neodymium doped disordered crystal waveguide

Area of Science:

• Materials Science
• Optics and Photonics
• Laser Physics

Background:

• Neodymium (Nd)-doped disordered crystal waveguides are promising for advanced laser applications.
• Efficient generation of multiple laser wavelengths from a single gain medium is a key research area.
• Disordered crystal structures offer unique optical properties for laser development.

Purpose of the Study:

• To demonstrate tri-wavelength laser generation from a Nd-doped calcium niobium gallium garnet (CNGG) disordered crystal waveguide.
• To characterize the laser performance, including threshold and slope efficiency.
• To investigate the stability and spectral properties of the generated laser output.

Main Methods:

• Fabrication of a Nd-doped CNGG disordered crystal waveguide.
• Utilizing a launched pumping laser to excite the Nd-doped waveguide.
• Spectral analysis to identify the generated laser wavelengths.
• Stability testing of the continuous laser output.

Main Results:

• Successful generation of a tri-wavelength laser output.
• Observed laser wavelengths at 1058 nm, 1060 nm, and 1064 nm.
• Achieved a laser threshold of 83 mW with a slope efficiency of 5.1%.
• Confirmed the continuous and stable operation of the generated laser.

Conclusions:

• Nd-doped CNGG disordered crystal waveguides can effectively generate stable, continuous, tri-wavelength laser output.
• The demonstrated laser system shows potential for applications requiring multiple wavelengths.
• Further research can explore optimizing efficiency and wavelength selection in such disordered crystal lasers.