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Laser Micromachining for Polymer Surface Topography Design
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A mechanically bendable and conformally attachable polymer membrane microlaser array enabled by digital interference

Wenbin Huang1, Xin-Jun Zhang, Tianchi Yang

  • 1School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China. yangxiaofei@suda.edu.cn yhliu@suda.edu.cn.

Nanoscale
|March 13, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a flexible, thin polymer membrane microcavity laser array using digital interference lithography. This technology enables wearable electronics and advanced optical applications by creating bendable, attachable laser arrays with high efficiency.

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Area of Science:

  • Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Miniaturization and thinning of photonic devices are crucial for multi-functional integrated circuits.
  • Novel applications in wearable and disposable electronics require advanced photonic components.

Purpose of the Study:

  • To demonstrate a mechanically bendable and conformally attachable polymer membrane microcavity laser array.
  • To showcase the capabilities of digital interference lithography for creating such arrays.

Main Methods:

  • Utilized digital interference lithography to create subwavelength grating pixels.
  • Engineered distributed Bragg resonator microcavities via coherent interference of gratings.
  • Fabricated a 30 μm thick polymer membrane microlaser array.

Main Results:

  • Achieved high efficiency (1k pixels per second) and versatility in pixel control.
  • Demonstrated a vertically emitting microcavity laser array for efficient light coupling.
  • Confirmed excellent performance stability and reliability under harsh conditions.

Conclusions:

  • The polymer membrane microlaser array is reversibly stretchable, repeatedly bendable, and conformally attachable to irregular surfaces.
  • The device maintains single-mode and low-threshold characteristics after deformation.
  • This technology paves the way for on-chip optical functionalization in wearable electronics and environmental monitoring.