Er, Cr: YSGG
In the Er,Cr:YSGG crystal ,Cr3+ replaces the Ga3+ or Sc3+，and Y3+ is replaced by Er3+, the crystal has the advantages of large size, low optical damage, high optical quality, and low lasing threshold. Flashlamp or laser diode is often used to pump the laser crystal, 970 nm laser diode is regarded as the first choice to realize 2790 nm laser pumping of Er,Cr:YSGG, which can excite the Er3+ to his lasing upper level directly with high efficiency and low energy cost. Nowadays, various method have been adopted to switch Q (such as acousto-optic, electro-optic, FTIR) to realize pulse laser output. Owing to the specificity of lasing wavelength, this kind of lasers are widely used in medical applications, scientific investigations, material processing, military and so on.
- Good crystal quality
- Super mechanical properties
- Low pump threshold
- High slope efficiency
- Working at medium frequency
| Bond strengths of porcelain laminate veneers to tooth surfaces prepared with acid and Er,Cr:YSGG laser etching The Journal of Prosthetic Dentistry,Volume 90, Issue 1,50003,Pages 24-30 |
| Clinical evaluation of Er,Cr:YSGG and GaAlAs laser therapy for treating dentine hypersensitivity: A randomized controlled clinical trial Journal of Dentistry,Volume 39, Issue 3,50011,Pages 249-254 |
| Effect of Er,Cr:YSGG laser irradiation on the apical sealing ability of AH Plus/gutta-percha and Hybrid Root Seal/Resilon Combinations Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology,Volume 110, Issue 5,50010,Pages 657-664 |
| Effect of Er,Cr:YSGG on bond strength and microleakage of dentin bonded to resin composite with different distance and irradiation time Photodiagnosis and Photodynamic Therapy,50018 |
| Efficacy of Er Cr: YSGG laser therapy at different frequency and power levels on bond integrity of composite to bleached enamel Photodiagnosis and Photodynamic Therapy,Volume 22,50018,Pages 34-38 |
| Er,Cr:YSGG laser irradiation influence on Y-TZP bond strength to resin cement Ceramics International,Volume 42, Issue 12,50016,Pages 13790-13795 |
| Er,CR:YSGG lasers induce fewer dysplastic-like epithelial artefacts than CO2 lasers: an in vivo experimental study on oral mucosa British Journal of Oral and Maxillofacial Surgery,Volume 50, Issue 6,50012,Pages 508-512 |
| Improving the initial biocompatibility of a titanium surface using an Er,Cr:YSGG laser-powered hydrokinetic system Dental Materials,Volume 23, Issue 4,50007,Pages 410-414 |
| Laser etching of enamel for direct bonding with an Er,Cr:YSGG hydrokinetic laser system American Journal of Orthodontics and Dentofacial Orthopedics,Volume 122, Issue 6,50002,Pages 649-656 |
| Tensile bond strength of Er,Cr:YSGG laser-irradiated human dentin and analysis of dentin–resin interface Dental Materials,Volume 23, Issue 5,50007,Pages 570-578 |
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Er,Cr:YSGG crystals crylink have supplied
Size: 3x3x8 mm
Both sides polishing
Size: 3x3x8 mm
Both sides polishing
Parameter
| Crystal Structure | Cubic |
| Chemical Formula | Y2.93Sc1.43 Ga3.64O12 |
| Lattice Constant | 12.42 Å |
| Concentration | 30 at % (3.7 x 1021 cm-3 , dodecahedral Er3+) |
| 2 at % (1.7 x 1020 cm-3 , octahedral Cr3+) | |
| Wavefront Distortion (per inch of rod length) | 1/2 |
| Surface Quality | 10 – 5 scratch-dig |
| Perpendicularity | 5 ‘ |
| Parallelism | 30〞 |
| Barrel Finish | 55 micro-inch ±5 micro-inch |
| Chamfer Angle | 45 deg ±5 deg |
| Chamfer | 0.005 ±0.003 in |
| Length Tolerance | +0.040 / -0.000 in |
| Diameter Tolerance | +0.0000 / -0.0020 in |
| Thermal conductivity（W/mK） | 8 |
| Thermal expansion coefficient | 8.1×10-6/K |
| Thermo-optical factor（dn/dT）（10-6/K） | 12.3 |
| Hardness（Mohs） | 8 |
| Density | 5.67g/cm3（Cr&Er doped） |
| Sizes, (dia x length), mm | from 3 x 30 to 12.7 x 127.0 |
| Orientation | <001>, <111> |
| Refractive index | 1.92 at 1000nm |
| Fluorescent Lifetime | 1400 μs |
| Emission cross-section, cm2 | 5.2 x 10-21 |
| Lasing wavelength, µm | 2.791 |
