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Cr,Er:YSGG

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Cr,Er:YSGG
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在Cr，Er:YSGG晶体中，Cr3+取代Ga3+或Sc3+，Y3+取代Er3+，具有尺寸大、光学损伤小、光学质量高、激光阈值低等优点。激光晶体的泵浦通常采用闪光灯或激光二极管，970nm激光二极管被认为是实现2790nm Er，Cr:YSGG激光泵浦的首选，它可以直接将Er3+激发到其激光上能级，效率高，能耗低。目前，为了实现脉冲激光输出，人们采用了多种方法来切换Q（如声光、电光、FTIR）。由于激光波长的特殊性，这种激光器广泛应用于医学、科学研究、材料加工、军事等领域。

  • 晶体质量好
  • 超级机械性能
  • 低泵阈值
  • 高斜边效率
  • 以中频工作

材料规格

晶体结构立方
化学式Y2.93Sc1.43 Ga3.64O12
晶格常数12.42 Å
浓度30 at % (3.7 x 1021 cm-3 , 十二面体Er3+)
2 at % (1.7 x 1020 cm-3 , 八面体Cr3+)
波前畸变（每英寸棒长）2-Jan
表面质量10 – 5刮痕–凹陷
垂直性5 ‘
平行性30〞
精密研磨55 微英寸 ±5微英寸
倒角45 deg ±5 deg
倒角0.005 ±0.003 in
长度公差+0.040 / -0.000 in
直径公差+0.0000 / -0.0020 in

物理和化学特性

导热系数（W / mK）8
热膨胀系数8.1×10-6/K
热光学系数（dn / dT）（10-6/ K）12.3
硬度（莫氏）8
密度5.67g/cm3（Cr&Er 掺杂）
尺寸（直径x长度），毫米从 3 x 30 到 12.7 x 127.0
取向<001>, <111>

光学和光谱性质

折光率1.92 at 1000nm
荧光寿命1400 μs
发射截面，cm25.2 x 10-21
激光波长，µm2.791

吸收和发射光谱

Er Cr YSGG 激光晶体 发射谱Er,Cr YSGG 激光晶体 吸收谱

参考文献

[1]  Usumez A ,  Aykent F . Bond strengths of porcelain laminate veneers to tooth surfaces prepared with acid and Er,Cr:YSGG laser etching[J]. Journal of Prosthetic Dentistry, 2003, 90(1):24-30.
[2]  Yilmaz H G ,  Kurtulmus-Yilmaz S ,  Cengiz E , et al. Clinical evaluation of Er,Cr:YSGG and GaAlAs laser therapy for treating dentine hypersensitivity: A randomized controlled clinical trial[J]. Journal of Dentistry, 2011, 39(3):249-254.
[3]  Onay E O ,  Orucoglu H ,  Kiremitci A , et al. Effect of Er,Cr:YSGG laser irradiation on the apical sealing ability of AH Plus/gutta-percha and Hybrid Root Seal/Resilon Combinations[J]. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 2010, 110(5):657-664.
[4]  Almojaly S A ,  Al-Hamdan R S ,  Alrahlah A , et al. Effect of Er,Cr:YSGG on bond strength and microleakage of dentin bonded to resin composite with different distance and irradiation time[J]. Photodiagnosis and Photodynamic Therapy, 2018, 25.
[5] F Alkhudhairy,  Naseem M ,  Bin-Shuwaish M , et al. Efficacy of Er Cr: YSGG laser therapy at different frequency and power levels on bond integrity of composite to bleached enamel[J]. Photodiagnosis & Photodynamic Therapy, 2018, 22:34-38.
[6]  Aras W M F ,  Barroso J S M ,  Blay A , et al. Er,Cr:YSGG laser irradiation influence on Y-TZP bond strength to resin cement[J]. Ceramics International, 2016, 42(12):13790-13795.
[7] A González-Mosquera,  Seoane J , L García-Caballero, et al. Er,CR:YSGG lasers induce fewer dysplastic-like epithelial artefacts than CO2 lasers: an in vivo experimental study on oral mucosa[J]. British Journal of Oral & Maxillofacial Surgery, 2012, 50(6).
[8]  Huang H H ,  Chuang Y C ,  Chen Z H , et al. Improving the initial biocompatibility of a titanium surface using an Er,Cr:YSGG laser-powered hydrokinetic system[J]. Dental Materials, 2007, 23(4):410-414.
[9] S Ü?Ümez,  Orhan M , A Ü?Ümez. Laser etching of enamel for direct bonding with an Er,Cr:YSGG hydrokinetic laser system.[J]. American Journal of Orthodontics & Dentofacial Orthopedics, 2002, 122(6):649-656.
[10]  Lee B S ,  Lin P Y ,  Chen M H , et al. Tensile bond strength of Er,Cr:YSGG laser-irradiated human dentin and analysis of dentin–resin interface[J]. Dental Materials Official Publication of the Academy of Dental Materials, 2007, 23(5):570-578.
[11] Cengiz, Esra, Yilmaz, et al. Treatment of recurrent aphthous stomatitis with Er,Cr:YSGG laser irradiation: A randomized controlled split mouth clinical study[J]. Journal of Photochemistry and Photobiology, B. Biology: Official Journal of the European Society for Photobiology, 2017, 170:1-5.
[12]  Gurney M L ,  Sharples S D ,  Phillips W B , et al. Using an Er,Cr:YSGG laser to remove lithium disilicate restorations: A pilot study[J]. Journal of Prosthetic Dentistry, 2016:90-94.

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