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Nd:YAP

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Nd:YAP

NdYAP的化学式为 Nd3+YAlO3,结构畸变钙钛矿,属于斜六方晶系,空间群为Pbnmabc轴相互垂直,属于负单轴晶体。并且是各向异性的。在众多掺钕激光晶体中,NdYAP晶体不仅具有高导热性,而且在4F3/24 I13/2跃迁处具有较大的激发发射截面。它们是目前已知的最有效的激光晶体之一,以1300nm的高功率工作,该晶体主要由LD泵浦。1300nm激光器广泛用于医学,光纤通信和军事领域。此外,水分子在此激光波段具有良好的吸收能力。这使其具有很好的止血能力,并广泛用于止血、神经外科手术、病理组织切除和除皱等激光治疗。另外,NdYAP晶体具有自然的双折射特性,对于克服激光的热去极化和非线​​性频率转换非常有益。

  • 高导热率
  • 受激发射截面大
  • 高激光增益
  • 低激光阈值
  • 各向异性

材料规格

材料Nd: YAP
取向<5°
平行性≤10″
垂直性≤5′
表面质量10-5 (MIL-O-13830A)
波前失真λ/8 @ 633nm
表面平整度≤ λ/10 @632.8nm
通光孔径>95 %
长度公差+0.5/-0mm
厚度/直径公差±0.05 mm
损坏阈值≥500MW/cm2

物理和化学特性

晶体结构斜方晶– Pbnm
晶格常数a=5,176, b=5,307, c=7,355
密度5,35 g/cm3
熔点1870°C
导热系数0,11 W/(cm K)
热光学系数(dn / dT)na:9.7×10-6 K-1  nc:14.5×10-6 K-1
热膨胀/(10-6•K-1 @ 25°C)9.5 (a ),  4.3(b),  10.8(c)
硬度(莫氏)8.5
剪切模量/ Gpa2.2×1012 dyn/cm2
比热400 J/(kg K)
线性色散δn/δT[10-6K-1]9.7 (na)

光学和光谱性质

激光跃迁4F3/24I9/2 930 nm 4F3/24I11/2 1079 nm
4F3/24I13/2 1340 nm 4F3/24I13/2 1432 nm
激光波长930nm 1079nm 1340nm
荧光寿命170ms
折射率@ 1064 nmna=1,929, nb=1,943, nc=1,952

发射截面

波长 (nm)发射截面10-19cm2 
a-cutb-cutc-cut
10792.051.761.38
13401.130.970.78
    
1432 0.34 

吸收和发射光谱

Nd-YAP激光晶体-发射谱-南京光宝-CRYLINKNd-YAP激光晶体-吸收谱unpolar-南京光宝-CRYLINK
Nd-YAP激光晶体-吸收谱polar-南京光宝-CRYLINK

参考文献

[1]  Huang C H ,  Zhang G ,  Wei Y , et al. 1.3414 μm Nd:YAP pulse laser in Q-switched mode[J]. Optics Communications, 2006, 260(1):248-250.
[2]  Yong W ,  Zhang G ,  Huang C H , et al. A single wavelength 1339 nm Nd:YAP pulsed laser[J]. Optics Communications, 2009, 282(22):4397-4400.
[3]  Rocca J P ,  Fornaini C ,  Brulat N , et al. CO2 and Nd:YAP laser interaction with lithium disilicate and Zirconia dental ceramics: A preliminary study[J]. Optics & Laser Technology, 2014, 57:216-223.
[4]  Chen X ,  Yu Y ,  Tao G , et al. High-power Continuous-wave Diode-side-pumped Nd:YAP/LBO 670.7nm Red Laser[J]. Optik, 2016, 127(3):1094-1096.
[5]  Zhu H ,  Huang C ,  Ge Z , et al. High-power CW diode-side-pumped 1341nm Nd:YAP laser[J]. Optics Communications, 2007, 270(2):296-300.
[6]  Yong W ,  Ge Z ,  Huang C , et al. High power Nd:YAG lasers operating at 1.3μm wave band[J]. Infrared Physics & Technology, 2008, 51(2):91-94.
[7]  Bonnet L ,  Boulesteix R ,  Matre A , et al. Influence of (Nd+Y)/Al ratio on sintering behavior and optical features of Y3-xNdxAl5O12 ceramics for laser applications[J]. Optical Materials, 2018, 77:264-272.
[8]  Wang X ,  Wang S ,  Rhee H , et al. LD end pumped mode locked and cavity dumped Nd:YAP laser at 1.34 μm[J]. Optics Communications, 2011, 284(12):3014-3017.
[9]  Wang S ,  Rhee H ,  Wang X , et al. LD end pumped, actively mode locked and passively Q-switched Nd:YAP laser at 1341 nm[J]. Optics Communications, 2010, 283(4):570-573.
[10]  Li X ,  Pan Q ,  Jing J , et al. LD pumped intracavity frequency-doubled and frequency-stabilized Nd:YAP/KTP laser with 1.1 W output at 540 nm[J]. Optics Communications, 2002, 201(1-3):165-171.
[11]  Guy O ,  Kubecek V ,  Barthelemy A . Mode-locked diode-pumped Nd:YAP laser[J]. Optics Communications, 1996, 130(1-3):41-43.
[12]  Boucher M ,  Musset O ,  Boquillon J P , et al. Multiwatt CW diode end-pumped Nd:YAP laser at 1.08 and 1.34 μm: Influence of Nd doping level[J]. Optics Communications, 2002, 212(1-3):139-148.
[13] Shaolin, Xue, and, et al. Passive mode-locking of a Nd:YAP laser at 1.3414 μm by using a convex-antiresonant ring unstable resonator[J]. Optics Communications, 1996.
[14]  Wang S ,  Wang X ,  Rhee H , et al. Pulsed Nd:YAP laser at 1432 nm pumped with high power laser diode[J]. Optics Communications, 2010, 283(14):2881-2884.

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