Nd:YAG-www.setoptics.com

Nd:YAG
 
Although Nd:YAG was invented in the sixties last century, it has been and is still the most commonly used solid-state crystal material. Nd:YAG crystals are wildly used in all types of solid-state lasers systems-frequency-doubled continuous wave, high-energy Q-switched, and so forth. Its good fluorescent lifetime thermal conductivity and physical strengths makes it suitable for high power lamp pumped laser.
                                                                                                 
1. Nd:YAG - Capabilities Include:
1.1 Nd Dopant Concentration: 0.5-1.2 atm%tolerance within 10% of concentration
1.2 Diameter: 3 ~ 14mm
1.3 Length: 1~ 160mm
 
2. Nd:YAG - Typical Specification and Tolerance:
Orientation: <111> crystalline direction (+/-0.50C)
Wavefront Distortion:
        a) Lambda/10 @632.8nm for 3 ~ 7mm
        b) Lambda/8 per inch @632.8nm for >=7mm
2.3 Surface Quality: better than 20/10 Scratch/Dig per MIL-O-1380A
2.4 Parallelism: < 10 arc seconds
2.5 Perpendicularity: < 5 arc minutes
2.6 Surface Flatness: Lambda/10 @632.8nm
2.7 Clear Aperture: Central 90%
2.8 Chamfer: 0.15mm x 450
2.9 Damage Threshold:
       a) > 15J/cm2(uncoated)
       b) > 700 MW/cm2(coated)
2.10 Coatings:
         a) AR@1064nm, R<0.1%;
         b) AR@1064nm, R< 0.1%;HT@808nm, T>95%;
         c) HR@1064nm, R>99.8%; HT@808nm, T>95%;
         d) HR@1064nm, R>99.8%; HT@808nm, T>95%; HR@532nm, R>99%;
Notes:
To inquiry or order a finished Nd:YAG laser rod, please specify the specifications listed above, for common application, we only need to know the main specification: Nd-dopant concentration, sizes, and coating. For special request, please specify specifications in details for evaluation and fabrication.
 
3. Nd:YAG - Physical and Optical Properties:
3.1 Chemical Formula: Nd:Y3AI5O12
3.2 Crystal Structure: Cubic
3.3 Lattice Constants: 12.01Å
3.4 Concentration: ~ 1.2 x 1020cm-3
3.5 Melting Point: 1970 0C
3.6 Density: 4.56 g/cm3
3.7 Mohs Hardness: 8.5
3.8 Refractive Index: 1.82
3.9 Thermal Expansion Coefficient: 7.8 x 10-6/K [111], 0 - 250 0C
3.10 Thermal Conductivity: 14 W/m/K @20 0C, 10.5 W/m/K @100 0C
3.11 Lasing Wavelength: 1064nm
3.12 Stimulated Emission Cross Section: 2.8x10-19cm-2
3.13 Relaxation Time of Terminal Lasing Level: 30ns
3.14 Radiative Lifetime (Nd=1.1 atm%): 550us
3.15 Spontaneous Fluorescence (Nd=1.1 atm%): 230us
3.16 Loss Coefficient (Nd=1.1 atm%): 0.003 cm-1 @1064nm
3.17 Effective Emission Cross Section: 2.8 x 10-19cm2
3.18 Pump Wavelength: 807.5nm
3.19 Absorption band at pump wavelength: 1nm
3.20 Linewidth: 0.6nm
3.21 Polarized Emission: Unpolarized
3.22 Thermal Birefringence: High
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