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Method for preparing hybrid medium of waveguide distributed feedback structure with fluctuant surface

A technology of distributed feedback and hybridization, applied in the direction of active dielectric materials, laser components, electrical components, etc., to achieve the effect of simple process, easy control and high efficiency

Inactive Publication Date: 2009-12-02
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the use of soft etching technology to prepare hybrid media with waveguide distribution and feedback structures with undulating surfaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] step 1:

[0033] Irradiate a commercial photoresist plate such as Chp-C with two polarized interference 488nm Ar+ lasers, HPR photoresist No. 15 (polyvinyl alcohol cinnamate No. 15), photoresist No. 16 (polyvinyl alcohol oxyethyl Aldehyde cinnamate No. 16), photoresist BP218 (300), AZ4110, etc. The exposure time is 10-150s, and then the exposed photoresist is soaked in NaOH aqueous solution with a concentration of 0.1-10wt%, the developing time is 1-15s, and the one-dimensional photonic crystal structure with surface fluctuations is obtained after drying. micropattern master.

[0034] Step 2:

[0035] The preparation of the soft stamp with micropatterns on the surface is to mix the prepolymer of polydimethylsiloxane (PDMS, purchased from Dow Corning Company) and the supporting crosslinking agent according to the ratio of 20:1 to 5:1 by mass Uniform, vacuum degassed for 10-60 minutes, cast into the mold of the micro-pattern master plate with one-dimensional photonic c...

Embodiment 2

[0041] The difference from Example 1 is that the photoresist plate in Step 1 of Example 1 is replaced by an azo polymer film. The specific process steps are as follows:

[0042] Dissolve 0.05-1 g of azo polymer such as BP-AZ-CA molecule reported in document Polymer 43 (2002) 7325-7333 in 1 ml of N, N-dimethylformamide (DMF), and use 0.2 Filter with a μm needle filter, then spin-coat the filtered solution on a glass slide to form a film, and dry it at 40-80°C for 2-48 hours to obtain an azo polymer film with a smooth surface; irradiate with two beams of 488nm Ar+ laser beams The azo polymer film takes 5 to 60 minutes to obtain a micropattern master plate with a one-dimensional photonic crystal structure with surface fluctuations.

Embodiment 3

[0044] The difference from Example 1 is that the micropattern master of the one-dimensional photonic crystal structure with surface relief obtained by the photoresist in step 1 of Example 1 is replaced by a microstructure with surface relief produced by micromachining. of the master. That is to use a special grating marking machine to directly mark the substrate (silicon wafer or glass wafer or polymethyl methacrylate wafer or polyurethane wafer, etc.) by means of mechanical marking.

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Abstract

The invention discloses a method for preparing hybrid medium of a waveguide distributed feedback structure with fluctuant surface, which relates to the preparation of a waveguide distributed feedback dye-doped solid laser. The invention provides the method for preparing the hybrid medium of the waveguide distributed feedback structure with the fluctuant surface, which has the advantages of simple process, easy control, low cost, high efficiency and the like. The hybrid medium of the waveguide distributed feedback structure with the fluctuant surface is prepared by the following steps: producing a micro-pattern mother matrix with a one-dimensional or two-dimensional photonic crystal structure with the fluctuant surface; transferring a fluctuant micro-pattern on the surface of the mother matrix onto the surface of a curable polymer elastomer by utilizing a method of surface copying to obtain a soft seal with the micro-pattern; using sol-gel technology to obtain an organic-inorganic hybrid film; and stamping the soft seal with the micro-pattern on the surface of the organic-inorganic hybrid film, and performing the processes of preheat treatment, ultraviolet irradiation crosslinking, seal uncovering and postheat treatment.

Description

technical field [0001] The invention relates to the preparation of a waveguide distribution feedback type dye-doped solid-state laser, in particular to a preparation method of a surface undulating waveguide distribution feedback structure hybrid medium. Background technique [0002] Commercial dye lasers have the advantages of wide tunable range and high efficiency in the visible light band, but compared with solid-state laser systems, they have disadvantages such as complex structure, poor operation reliability, and troublesome maintenance. The dye replacement procedure is cumbersome, and a large amount of toxic, flammable and explosive waste liquid will be generated every time it is replaced. The solid state of dye laser gain medium meets the requirements of miniaturization and practicality, and is an important development direction of tunable dye lasers. Most of the early work used polymer material matrix, but its laser damage threshold is low, and the thermo-optic stabi...

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/098H01S3/16
Inventor 陈鹭剑李森森蔡志平周琼
Owner XIAMEN UNIV
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