Unlock instant, AI-driven research and patent intelligence for your innovation.

Multicolor composite random laser output method based on quantum dot size effect

A size effect, random laser technology, applied in the laser field, can solve the problems of low pump threshold and narrow half-wave width of quantum dot random laser, and achieve the effect of good monochromaticity

Inactive Publication Date: 2013-06-05
SOUTHEAST UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, compared with traditional random lasers, quantum dot random lasers have the characteristics of narrow half-wave width and low pumping threshold

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multicolor composite random laser output method based on quantum dot size effect
  • Multicolor composite random laser output method based on quantum dot size effect
  • Multicolor composite random laser output method based on quantum dot size effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following is a detailed description of a multi-color compound random laser output method based on the quantum dot size effect in the present invention in conjunction with specific embodiments:

[0027] like Figure 1a , 1b , a kind of multicolor composite random laser output method based on quantum dot size effect shown in 1c, the method comprises the following steps:

[0028] Step (1) Etch grooves 13, 14, 15, 16, 25, 26, 27, 28 on triangular substrates 12, 29 using mechanical processing / laser processing technology, wherein the groove size is 40 microns wide, 60 microns wide Micron, 75 micron, 90 micron, 120 micron, deep 30 micron, 50 micron, 60 micron, 70 micron, 80 micron, uneven surface shape.

[0029] Step (2) filling the quantum dots on the inner surfaces of the grooves 13 , 14 , 15 , 16 , 25 , 26 , 27 , and 28 to form a film.

[0030] Step (3) Reflect the laser signal to the focusing lens through the half mirrors 2, 5, 7 and mirrors 3, 4, 6, and the focusing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multicolor compound random laser output method based on a quantum dot size effect. The method includes a first step of etching a groove in a triangle substrate through utilization of the machining / laser processing technology, wherein the width of the groove is 40-120 microns, the depth of the groove is 30-80 microns, and the surface of the groove is uneven, a second step of filling quantum dots on the surface inside the groove to form a membrane, a third step of reflecting laser signals to a focusing lens through a semi-transparent semi-reflective mirror and a reflecting mirror, wherein the focusing lens converges the laser signals into the groove in the triangle substrate, and a fourth step of utilizing external signals to change an output light path structure to obtain multicolor compound random lasers. Through changes of the sizes of the quantum dots to obtain the emergent multicolor compound random lasers, the multicolor compound random laser output method based on the quantum dot size effect is capable of achieving outputting and compounding of the multicolor compound random lasers. The mixed lasers are good in monochromaticity, free from affluence of environmental factors such as temperature and voltage, and capable of achieving outputting compound and adjustable random laser signals.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a multi-color composite random excitation based on the size effect of quantum dots. [0002] Light output method. Background technique [0003] In recent years, due to its special feedback mechanism, specific working wavelength, convenient manufacturing, and low cost, random laser has potential application value in the fields of document coding, identification of friend or foe, flat panel display, integrated optics, remote temperature sensing and other fields, which has attracted international attention. Popular research in the laser science community. Random laser radiation originates from an activated disordered medium, and provides optical feedback through multiple scattering of radiated light in the medium, thereby obtaining greater gain without additional resonant cavity, in semiconductor and laser crystal powder, dye solution doped with nanoparticles And polymers, dye-infi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01S5/347
Inventor 叶莉华王叶轩张家雨王文轩吕聪生崔一平
Owner SOUTHEAST UNIV