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BST Fabry-Perot micro-cavity and manufacture method

A technology of optical microcavity and barium strontium titanate, which is applied in the field of Fabry-Perot optical microcavity, can solve the problem of inability to realize dynamic tuning of device operating frequency, etc., and achieve the effect of convenient operation and simple equipment

Inactive Publication Date: 2007-10-24
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the working performance of FP optical microcavities based on these materials can only be optimized at a single wavelength, and dynamic tuning of the operating frequency of the device cannot be achieved.

Method used

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  • BST Fabry-Perot micro-cavity and manufacture method
  • BST Fabry-Perot micro-cavity and manufacture method
  • BST Fabry-Perot micro-cavity and manufacture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the preparation of single-mode optical microcavity:

[0027] §1. Preparation of precursor solution for preparing ferroelectric Bragg reflective film layer:

[0028] The solvent is glacial acetic acid, the stabilizer is caproyl acetone, and the thickener is polyvinylpyrrolidone.

[0029] The solute is strontium acetate, barium acetate and titanium n-butoxide, and their molar ratio is 0.9:0.1:1. Dissolve 2.7864g of barium acetate, 0.2603g of strontium acetate, and 0.65g of polyvinylpyrrolidone in 30ml of heated glacial acetic acid at a heating temperature of 40-80°C, then add about 2ml of hexanoylacetone, stir and let it cool, and finally add 4. 1670ml of titanium n-butoxide and continue to stir for 2-3 hours, add a small amount of distilled water to dilute, and filter to obtain a clear and transparent BST precursor solution with a molar concentration of about 0.3M / L. The solution will not deteriorate within a year.

[0030] §2. Preparation of precursor s...

Embodiment 2

[0036] Embodiment 2: Preparation of coupled optical microcavity

[0037] The preparation method is the same as in Example 1, and the final structure is: strontium titanate substrate 1\8 periods BST lower ferroelectric Bragg reflection film layer 2\BST zm Defect layer 3\6 period BST middle layer ferroelectric Bragg reflection layer 5\BST zm The coupling optical microcavity of the ferroelectric Bragg reflection film layer 4 on the upper layer of the defect layer 3\8 period BST.

[0038] The thickness of the upper and lower ferroelectric Bragg reflection layers is 1.2 μm, the thickness of the middle ferroelectric Bragg reflection layer is 0.8 μm, and the thickness of the two defect layers is 50 nm. FIG. 3 shows the reflection spectrum of the coupled optical microcavity in Example 2.

[0039] In order to illustrate that the operating frequency of the optical microcavity can be adjusted by changing the process parameters, we show the reflection spectra of the single-mode optical ...

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Abstract

The disclosed barium strontium titanate FP optical micro-cavity comprises a ferro-electric Prague reflection film layer and a defect layer, wherein the chemical growing solution uses glacial acetic acid as solvent, acylacetone as stabilizer, polyvinylpyrrolidone (PVP) as thickener, and all of BaAC, SrAC, and titanium n-butylalcohol as the solute, wherein there is no PVP in solution for preparing the defect layer. This invention is simple and convenient to operate.

Description

technical field [0001] The invention relates to a Fabry-Perot optical microcavity composed of multi-layer ferroelectric film. Specifically, it refers to a Fabry-Perot (FP) optical microcavity composed of barium strontium titanate (BST) multilayer ferrodielectric film and a preparation method. Background technique [0002] In the past few decades, FP optical microcavities were mainly used in interference filters. In recent years, it has been widely used in vertical cavity surface emitting lasers and resonant light emitting diodes. The main reason is that the FP optical microcavity can amplify the electromagnetic field, which can greatly improve the coupling efficiency of the laser and make the integration of the laser Improve, light output divergence angle is small. Similarly, the use of FP optical microcavities can greatly increase the luminous intensity of rare earth luminescent materials and narrow the luminous linewidth. Bragg mirrors with high reflectivity are an impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/10
Inventor 胡古今洪学鵾戴宁
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI