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    • 摻釹釩酸釔（Nd:YVO4)
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    摻釹釩酸釔（Nd:YVO4)
    
     
     
    
     
    
	
      
    
	摻釹釩酸釔（Nd:YVO4）晶體是一種性能優(yōu)良的激光晶體，適于制造激光二極管泵浦特別是中低功率的激光器。與Nd:YAG相比Nd:YVO4對泵浦光有較高的吸收系數(shù)和更大的受激發(fā)射截面。激光二極管泵浦的Nd:YVO4晶體與LBO,BBO,KTP等高非線性系數(shù)的晶體配合使用，能夠達(dá)到較好的倍頻轉(zhuǎn)換效率，可以制成輸出近紅外、綠色、藍(lán)色到紫外線等類型的全固態(tài)激光器。現(xiàn)在Nd:YVO4激光器已在多個領(lǐng)域得到廣泛的應(yīng)用。而且Nd:YVO4二極管泵浦固態(tài)激光器正在迅速取代傳統(tǒng)的水冷離子激光器和燈泵浦激光器的市場，尤其是在小型化和單縱模輸出方面。

    

    

    

    
	Capabilities:

    

    
	
    
		
			
    
				
					
    
						Nd dopant:
					
    
				    		
				
					
    
						0.27%, 0.3%, 0.4%, 0.5%, 0.7%, 1.0%, 2.0%, 3.0%
					
    
				    		
			
    
			
    
				
					
    
						Width x Height:
					
    
				    		
				
					
    
						1x1 ~ 16x16mm
					
    
				    		
			
    
			
    
				
					
    
						Length:
					
    
				    		
				
					
    
						0.02 ~ 20mm
					
    
				    		
			
    
		    
	
    

    

    

    
	Specifications:

    

    
	
    
		
			
    
				
					
    
						Orientation:
					
    
				    		
				
					
    
						a-cut( ± 0.5° )
					
    
				    		
			
    
			
    
				
					
    
						Dimensional Tolerance:
					
    
				    		
				
					
    
						+/-0.1mm
					
    
				    		
			
    
			
    
				
					
    
						Wavefront Distortion:
					
    
				    		
				
					
    
						<λ/8 at 633nm
					
    
				    		
			
    
			
    
				
					
    
						Surface Quality:
					
    
				    		
				
					
    
						20/10
					
    
				    		
			
    
			
    
				
					
    
						Parallelism:
					
    
				    		
				
					
    
						< 10 arc seconds
					
    
				    		
			
    
			
    
				
					
    
						Perpendicularity:
					
    
				    		
				
					
    
						< 5 arc minutes
					
    
				    		
			
    
			
    
				
					
    
						Surface Flatness:
					
    
				    		
				
					
    
						<λ/10 at 632.8nm
					
    
				    		
			
    
			
    
				
					
    
						Clear Aperture:
					
    
				    		
				
					
    
						Central 95%
					
    
				    		
			
    
			
    
				
					
    
						Chamfer:
					
    
				    		
				
					
    
						0.15x45°
					
    
				    		
			
    
			
    
				
					
    
						Coating:
					
    
				    		
				
					
    
						1.AR@1064nm R<0.1%
    
						2.AR@1064nm R< 0.1% & HT@808nm T>95% 
    
						3.HR@1064nm R>99.8% & HR@532nm R>99% & HT@808nm T>95%
					
    
				    		
			
    
		    
	
    

    

    

    
	Properties: 

    

    
	
    
		
			
    
				
					
    
						Atomic Density
					
    
				    		
				
					
    
						~1.37x1020 atoms/cm2
					
    
				    		
			
    
			
    
				
					
    
						Crystal Structure
					
    
				    		
				
					
    
						Zircon Tetragonal, space group D4h, a=b=7.12, c=6.29
					
    
				    		
			
    
			
    
				
					
    
						Density
					
    
				    		
				
					
    
						4.22 g/cm3
					
    
				    		
			
    
			
    
				
					
    
						Mohs Hardness
					
    
				    		
				
					
    
						Glass-like, ~5
					
    
				    		
			
    
			
    
				
					
    
						Thermal Expansion Coefficient
					
    
				    		
				
					
    
						aa=4.43x10-6/K, ac=11.37x10-6/K
					
    
				    		
			
    
			
    
				
					
    
						Thermal Conductivity Coefficient
					
    
				    		
				
					
    
						||C: 5.23 W/m/K; ^C: 5.10 W/m/K
					
    
				    		
			
    
			
    
				
					
    
						Lasing Wavelengths
					
    
				    		
				
					
    
						914nm, 1064 nm, 1342 nm
					
    
				    		
			
    
			
    
				
					
    
						Crystal Class
					
    
				    		
				
					
    
						positive uniaxial, no=na=nb ne=nc
    
						no=1.9573, ne=2.1652, @ 1064nm
    
						no=1.9721, ne=2.1858, @ 808nm
    
						no=2.0210, ne=2.2560, @ 532nm
					
    
				    		
			
    
			
    
				
					
    
						Thermal Optical Coefficient
					
    
				    		
				
					
    
						dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K
					
    
				    		
			
    
			
    
				
					
    
						Stimulated Emission Cross-Section
					
    
				    		
				
					
    
						25.0x10-19 cm2 , @1064 nm
					
    
				    		
			
    
			
    
				
					
    
						Fluorescent Lifetime
					
    
				    		
				
					
    
						90 ms (about 50 ms for 2 atm% Nd doped) @ 808 nm
					
    
				    		
			
    
			
    
				
					
    
						Absorption Coefficient
					
    
				    		
				
					
    
						31.4 cm-1 @ 808 nm
					
    
				    		
			
    
			
    
				
					
    
						Absorption Length
					
    
				    		
				
					
    
						0.32 mm @ 808 nm
					
    
				    		
			
    
			
    
				
					
    
						Intrinsic Loss
					
    
				    		
				
					
    
						Less 0.1% cm-1 , @1064 nm
					
    
				    		
			
    
			
    
				
					
    
						Gain Bandwidth
					
    
				    		
				
					
    
						0.96 nm (257 GHz) @ 1064 nm
					
    
				    		
			
    
			
    
				
					
    
						Polarized Laser Emission
					
    
				    		
				
					
    
						p parallel to optic axis (c-axis)
					
    
				    		
			
    
			
    
				
					
    
						Diode Pumped Optical to Optical fficiency
					
    
				    		
				
					
    
						> 60%
					
    
				    		
			
    
		    
	
    

    

    

    
	Sellmeier Equation (for pure YVO4 crystals)
    
	no2=3.77834+0.069736/(l2 - 0.04724) - 0.0108133l2
    
	no2=4.59905+0.110534/(l2 - 0.04813) - 0.0122676l2

     
    


    
    
    
    


    
    
    
    
    
    
     
    
      
     
    
      
      
    
	Note: Kinds of sizes, coating are available upon request.


    

     
    
     
    
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