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Active glass-polymer superlattice structure for photonic integration.
Zhanxiang Zhao1, Gin Jose, Toney T Fernandez
1Institute for Materials Research, University of Leeds, Leeds, LS2 9JT, UK.
Nanotechnology
|May 11, 2012
Summary
Researchers developed an all-laser technique to grow rare-earth doped glass and polymer superlattices. This method enables the integration of dissimilar materials for advanced optical devices.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Integrating chemically dissimilar materials like polymers and glasses at the nanoscale presents significant challenges.
- Conventional methods often fail to achieve the necessary structural and thermal compatibility for advanced device fabrication.
Purpose of the Study:
- To demonstrate an all-laser processing approach for controlled growth of organic-inorganic superlattices.
- To illustrate the structural and thermal compatibility between tellurium-oxide glass and polydimethyl siloxane (PDMS) polymer at the nanometer scale.
- To enable fabrication of novel photonic devices through polymer-glass integration.
Main Methods:
- Utilized pulsed laser deposition (PLD) for superlattice film growth with interlayer thicknesses down to 2 nm.
- Employed femtosecond-laser micro-machining for patterning planar waveguides.
- Operated PLD at low temperatures (100°C) to preserve material integrity.
Main Results:
- Successfully grew organic-inorganic superlattice films with nanoscale precision.
- Achieved efficient light propagation and amplified spontaneous emission (ASE) in Er(3+)-doped waveguides.
- Demonstrated structural and thermal compatibility between the glass and PDMS components.
Conclusions:
- The all-laser processing approach facilitates the integration of chemically complex and dissimilar materials.
- This technique opens pathways for fabricating efficient and durable polymer optical amplifiers and lossless photonic devices.
- The method is versatile for creating functional films for diverse optical, thermal, mechanical, and biological applications.
