Polymer lasers assembled by suspending membranes on a distributed feedback grating.

Area of Science:

• Materials Science
• Optics and Photonics
• Polymer Science

Background:

• Polymer lasers offer potential for low-cost, flexible photonic devices.
• Efficient light confinement is crucial for achieving low lasing thresholds.

Purpose of the Study:

• To present a novel fabrication method for polymer lasers.
• To demonstrate the capability of achieving low-threshold lasing in polymer systems.

Main Methods:

• Fabrication involves directly attaching a polymer membrane to a one- or two-dimensional grating.
• The suspended membrane acts as a waveguide, supported by grating ridges with air gaps.
• Optical pumping is used to excite the polymer laser.

Main Results:

• The membrane/air interfaces provide strong reflection, confining radiation within the waveguide.
• The proposed assembly method enables low-threshold lasing in polymer lasers.
• This technique offers an alternative pathway for polymer laser fabrication and study.

Conclusions:

• The presented assembly method is effective for fabricating polymer lasers.
• The design facilitates efficient light confinement, leading to low lasing thresholds.
• This work provides a new avenue for exploring and developing low-threshold polymer laser technologies.