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Microstructuring of Nd:YAG crystals by proton-beam writing
1GIEL, Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid 28049, Spain. antonio.benayas@uam.es
Optics Letters
|December 3, 2010
Summary
Direct proton-beam writing enables microstructuring of neodymium-doped yttrium aluminum garnet (Nd:YAG) crystals. This technique allows for precise fabrication of buried channel waveguides for potential laser gain applications.
Area of Science:
- Materials Science
- Optics
- Solid-State Physics
Background:
- Neodymium-doped yttrium aluminum garnet (Nd:YAG) crystals are crucial for solid-state lasers.
- Precise microstructuring of optical materials is essential for advanced photonic devices.
- Proton-beam writing offers a pathway for controlled modification of crystal properties.
Purpose of the Study:
- To investigate the microstructuring of Nd:YAG crystals using direct proton-beam writing.
- To fabricate buried channel waveguides with precise spatial control.
- To evaluate the laser gain potential and understand the refractive index modification mechanism.
Main Methods:
- Direct proton-beam writing was employed for crystal microstructuring.
- Spatial control was achieved by varying crystal position and proton energy.
- Fluorescence imaging was used to analyze the fabricated structures.
Main Results:
- Buried channel waveguides were successfully fabricated in Nd:YAG crystals.
- Full spatial control over waveguide fabrication was demonstrated.
- The refractive index increment at the end of the proton path was observed and analyzed.
Conclusions:
- Proton-beam writing is an effective method for microstructuring Nd:YAG crystals.
- The fabricated waveguides show potential for laser gain applications.
- The refractive index increment is attributed to local enhancement in electronic polarizability via nuclear collisions.
