Electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control method and laser

A laser wavelength and highly integrated technology, applied in the laser field, can solve problems such as the inability to achieve laser wavelength, precise regulation and stable output, etc., and achieve the effects of easy mass production, ensuring consistency, and reducing production debugging and processing difficulty

Active Publication Date: 2020-12-08
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the bottleneck problem of laser generation technology under electron-phonon coupling, especially the lack of precise regulation and stable output of lase

Method used

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  • Electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control method and laser
  • Electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control method and laser

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0050] Example 1:

[0051] A highly integrated all solid state laser control device that realizes electron phonon coupling with 850nm output.

[0052] Structure such as Figure 1 As shown in the figure, the pump source 1, the laser focusing system 2 and the electron phonon coupling laser crystal 4 arranged in sequence along the optical path direction; Wherein, the pump source 1 is a laser diode laser, the pump wavelength is 658nm, and the electron phonon coupling laser crystal 4 is an emerald crystal, CR 3+ The ion doping concentration is 0.2at.% (at.% is the atomic percentage), the cutting direction, i.e. the light passing direction is the Z direction of the optical axis, the light passing length of electron phonon coupled laser crystal 4 is 10mm, the distance between the section center and the heat dissipation surface is 1.5mm, and the crystal temperature is controlled to 50 ℃.

[0053] An input cavity mirror dielectric film 3 is plated on the incident light end of the electron p...

Example Embodiment

[0055] Example 2:

[0056] As described in example 1, the difference is that the emission wavelength of pump source 1 is 976 nm, and the electron phonon coupling laser crystal is Yb 3+ Doped calcium borate yttrium oxide crystal, Yb 3+ The ion doping concentration is 20at.%. The crystal length is 6mm and the temperature is controlled at 5 ℃. The input cavity mirror dielectric film 3 is plated with a dielectric film with high transmittance of 900-1000 nm, high reflection of 1180-1200 nm and 70% transmittance of 1140-1160 nm; The output cavity mirror dielectric film 5 has a high reflection of 900-1000nm, a transmittance of 10% to 1180-1200nm and a transmittance of 70% to 1220-1240nm. Through the Huang Kun factor gain calculation, the maximum gain direction of electron phonon coupling of 1193nm laser wavelength emitted by the crystal is in the z-axis (103 ° ± 1 °) and X-axis (27 ° ± 1 °), and the focusing system is in the focusing ratio of 2:1. Increase the pump power to realize the e...

Example Embodiment

[0057] Example 3:

[0058] As described in example 1, the difference is that the pump source 1 is an all solid state laser, the emission wavelength is 532nm, and the electron phonon coupling crystal is titanium gem, Ti 3+The ion doping concentration is 0.1at.%, The crystal temperature is controlled at 10 ℃. The input cavity mirror dielectric film 3 is plated with a dielectric film with high transmission to 500-550 nm, high reflection to 880-920 nm and high transmission to 750-850 nm; The output cavity mirror dielectric film 5 is plated with a dielectric film with high reflection to 500-550 nm, 5% transmittance to 880-920 nm and 940-980 nm. The crystal is a trilateral system, and the imaginary part of its refractive index coincides with the real part. The crystal is cut along the z-axis direction of the optical axis, that is, the light passing direction is along the z-axis. The electron phonon coupling laser output with a wavelength of 900 nm is realized.

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Abstract

The invention relates to an electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control method and device. The regulation and control method comprises regulation and control in the three aspects of laser crystal cutting direction, resonant cavity coating and temperature control. Mainly aiming at laser emission of electron phonon coupling, a laser wavelength with an error of +/-2nm can be generated, the laser wavelength generated by transition of electrons between intrinsic energy levels is inhibited, and accurate wavelength regulation and control under electron-phonon coupling are realized. The electron phonon coupling laser crystal can be suitable for strong coupling luminous ions in transition metal and rare earth ions, preferably Cr < 3 + >, Yb < 3 +>, Ti < 3 + >, Tm < 3 + > and other laser activated ions. The invention further provides the electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control device. The electron-phonon coupled high-integration all-solid-state laser wavelength regulation and control device has the advantages of stable output wavelength, good controllability, low cost, good environmental adaptability and the like, can supplement the blank of the laser wavelength generated by the existing electronic intrinsic energy level, and has important significance in medical science, display and the like which urgently need laser with key special wavelength.

Description

technical field [0001] The invention is based on the electron-phonon coupling effect, relates to a highly integrated all-solid-state laser precise wavelength control technology that can break through the intrinsic energy level limit, and belongs to the field of laser technology. Background technique [0002] Laser, short for stimulated radiation amplification, has the characteristics of high energy density, high coherence, monochromaticity and directionality. According to the principle of laser, the output wavelength of laser depends on the energy level of the activated ions in the gain medium. In the past 60 years of laser development, people generally determine the wavelength of laser light that can be emitted by studying the fluorescence radiation characteristics of the gain medium, and have developed a series of analytical tools such as the Judd-Ofelt (J-O) theory and the Fuchtbauer-Landenburg (F-L) method. [0003] Electron-phonon coupling means that when activated ions...

Claims

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Application Information

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IPC IPC(8): H01S3/06H01S3/102
CPCH01S3/0602H01S3/0619H01S3/1028
Inventor 张怀金于浩海路大治
Owner SHANDONG UNIV
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