Solid State Dye Laser Using Porous PVDF-HFP Membrane
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid dye lasers pose handling challenges due to hazardous organic solvents, and solid-state polymer dye lasers have lower photo-stability, limiting their application in certain fields.
Innovation Solution
A solid-state dye laser is developed using a porous copolymer membrane of poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) loaded with Rhodamine or Coumarin dyes, prepared via phase inversion, phase separation, or breath figure techniques, which eliminates the need for organic solvents and enhances photo-stability by incorporating silica nanoparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid laser dyes are used, then wide tuning range and coherent radiation are achieved, but handling becomes inconvenient due to hazardous organic solvents
Solution Approach 1:
The patent uses porous polymer matrices to embed laser dye molecules, eliminating the need for liquid organic solvents. The porous structure allows dye molecules to be immobilized while maintaining optical properties, thus removing handling hazards associated with liquid solvents while preserving the laser functionality.
Solution Approach 2:
The patent creates composite materials by combining laser dye molecules with solid polymer matrices (such as polyvinylidene fluoride-co-hexafluoropropylene). This composite approach transforms the liquid dye into a solid-state system that eliminates solvent handling issues while maintaining the desired optical characteristics and tuning range.
2Object-affected harmful factors
If solid-state polymer laser dyes are used, then handling safety is improved by eliminating organic solvents, but photo-stability decreases
Solution Approach 1:
The porous polymer matrix provides a protective environment for the embedded dye molecules. The porous structure allows for optimal dye loading while the polymer framework protects the dye from degradation, thereby improving photo-stability compared to conventional solid-state polymer lasers.
Solution Approach 2:
The patent employs composite material systems where laser dyes are integrated with specific polymer matrices (such as PVDF-HFP). This composite structure enhances photo-stability by providing a stable chemical environment for the dye molecules while eliminating the instability issues of conventional solid-state polymer lasers.
3Ease of operation
If solid matrix laser dyes are used, then handling safety is improved, but photo-stability remains lower than liquid dyes
Solution Approach 1:
The porous polymer matrices used in this patent provide enhanced dye loading capacity and improved dye molecule distribution. This porous structure allows for better dye-polymer interaction that stabilizes the dye molecules, achieving photo-stability comparable to or exceeding liquid dye systems while maintaining the handling safety of solid-state materials.
Solution Approach 2:
The patent develops advanced composite material systems that overcome the photo-stability limitation of conventional solid-state polymer lasers. By carefully selecting and combining specific polymer matrices with laser dye molecules, the composite structure provides enhanced photostability while preserving the solid-state handling advantages.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a stable, solvent-free, coherent radiation source with a wide tuning range, enabling easy handling and improved mechanical stability, suitable for various applications including optical sensors and light emitting devices, while reducing the need for hazardous solvent handling.
Implementation Method 1
The solid state dye laser is prepared using one of, but not limited to, a phase inversion technique
Implementation Method 2
The loading is carried out by soaking the porous copolymer membrane in an alcoholic solution of the laser dye
Data Source
AI summary
The invention provides a solid state dye laser and methods for preparing the solid state dye laser. The solid state dye laser includes a porous copolymer membrane of poly(vinylidenefloride-cohexafluoroproplyne (PVDF-HFP) and a laser dye. The laser dye is incorporated in pores of the copolymer membrane. The solid state dye laser is prepared using one of a phase inversion technique, a phase separation technique, and a breath figure technique.