Mid-IR Laser Generating Ultrasound in a Polyetheretherketone Polymer

被引：0

作者：

Zhang, Ye ^{[1
]}

Liu, Gao-You ^{[1
]}

Chen, Yi ^{[1
]}

Qian, Chuan-Peng ^{[1
]}

Zhao, Ben-Rui ^{[1
]}

Yao, Bao-Quan ^{[1
]}

Dai, Tong-Yu ^{[1
]}

Duan, Xiao-Ming ^{[1
]}

机构：

[1] Harbin Inst Technol, Natl Key Lab Tunable Laser Technol, Harbin 150001, Heilongjiang, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2019年 / 36卷 / 11期

关键词：

42; 55; Rz; 60; Gd; 72; Ai; 78; 20; hc;

D O I：

10.1088/0256-307X/36/11/114201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate laser ultrasonic generation in polyetheretherketone (PEEK). A middle infrared ZnGeP2 optical parametric oscillator (ZGP-OPO) pumped by a Q-switched Ho:YAG laser is employed as the ultrasonic excitation source. The ZGP-OPO has a spectral range of 3.2?3.4 ?m. At an output wavelength of 3.4 ?m, the maximum average output power of ZGP-OPO is 3.05 W with a pulse width of 24.3 ns, corresponding to a peak power of approximately 127.5 kW. The ultrasound is generated by the laser converted from 3.2 to 3.4 ?m in the PEEK composite. The maximum ultrasonic signal amplitude in PEEK is 33 mV under the condition of thermoelastic excitation at 3.4 ?m. Ablation occurs in the CPRF sample when the energy fluence is over 122.45 mJ/cm(2). PEEK has a stronger absorption at 3.4 ?m and laser-ultrasound generation is influenced by the wavelength of the laser.

引用

页数：4

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