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You are here: Home / Laser Products / Laser Crystal / Nd:YAG
Nd YAG laser crystal laser crylink

Nd: YAG Crystal

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Nd: YAG is one of the mature developed laser crystals obtained by doping Nd ion into YAG crystal. The absorption bandwidth of Nd: YAG laser crystals is 730-760 nm and 790-820 nm and is usually pumped by a flash tube or laser diode. The typical laser emission peak is 1064 nm. It is also possible to emit lasers with wavelengths of 946 nm, 1120 nm, 1320 nm, and 1440 nm with some measures.

Q-switch and lock mode is adapted to obtain laser with different wavelengths (532 nm, 266 nm, 213 nm, etc.) and pulse width (10-25 ns), respectively, which makes the vast application in biophysics, medicine, military, machine, scientific research, and architecture, etc. The high concentration doped crystal is commonly applied to pulse laser, and the low concentration doped one is usually used in continuous wave output.

Turns With A Technology Base

Nd: YAG crystals are usually pumped with lots of laser emission peaks enabled with lock mode. It takes a basic configuration to access a flash tube or laser diode. Thus, it considers an influential role in finding out pulse width and others. Doped crystals are made for low concentration. It usually grabs it basically on the laser with different wavelengths. It gains a coefficient that turns out with the latest technologies. They are well adapted by discovering mechanical and physical properties. It takes a wide absorption bandwidth by delivering excellent optical sources. A low-lasting threshold with a high gain coefficient is accessed with visual references.

Case
Application
Feature
Reference
News
Case

Nd:YAG + V:YAG Bonding Crystal For 1319nm Laser
Size: 2.8*2.8*14.2mm; Nd:YAG:10mm; V:YAG:4.2mm, T0=75%@1319nm;
Nd:YAG Surface: R <1% @808±5nm & R > 99.9% @1319±1nm & R<10% @1064±1nm ,AOI=0±5°;
V:YAG Surface: R=85%±2% @1319±1nm & R<10% @1064±1nm, AOI=0±5°; Damage Threshold>700MW /[email protected], 10Hz, 1319nm;

Nd:YAG crystal case (2) for 1064 nm laser
Size: Φ8×165 mm;
2-side polished;

Wavefront distortion: λ/[email protected];
AR/[email protected] R<0

Nd:YAG crystal case (3) for 1064 nm laser
Size: dia. 7 mm, length 140 mm;
Concentration 0.8-1%;
AR for working ends 1064 nm

Nd:YAG crystal case (4) for 1064 nm laser
Size: dia.4×10 mm;
Nd concentration – (standard for pulsed lasers) 0.9-1.3 at. %;
Coating: AR/AR for both sides at 1064nm

Nd:YAG + V:YAG bonding crystal for 1319nm laser
Nd: YAG surface:
R<1%@808±5 nm & R>99.9%@1319±1 nm & R<10%@1064±1 nm, AOI=0±5°

V: YAG surface:
R=85%±2%@1319±1 nm & R<10%@1064±1 nm, AOI=0±5°

Nd: YAG crystal case (6) for 1064 nm laser
Size: dia. 2*75 mm;
2-side polishing;
AR/[email protected] nm

Nd:YAG crystal case (7) for 1064 nm laser
Size: dia. 8*165 mm;
Nd doping level: 0.8~1.1%;
2-side polished on Ø8 mm surface;
AR/[email protected] R<0.2

Nd:YAG crystal case (8) for Laser Welding machine
Size: Ø7×145 mm;
Coating: AR/[email protected]1064nm R<0.2%

Nd:YAG crystal case (9) 
Size: dia. 1*20 mm;
Nd doping level: 1.1%

Nd:YAG crystal case (10) for 1064 nm laser
Size: φ7×145 mm;
Concentration: 1.0-1.1%;
Coated: AR/[email protected]

Nd:YAG crystal case (11) – Nd:YAG case (11) – Custom
Size: Φ6.35×109 mm;
Groove =49.25*2=95.5 mm;
Coating: AR/[email protected], R<0.25

Application

Material Processing
266nm laser
532nm laser
1064nm laser
355nm laser

Optical Communication
532nm laser

Radar and Ranging
1064nm,532nm,355nm laser

Medical Applications
532nm laser
1064nm/532nm laser
1064nm laser

Feature
  • High gain coefficient
  • Low lasing threshold
  • Excellent optical, mechanical and physical properties
  • High slope efficiency
  • Wide absorption bandwidth
Reference
A LD side-pumped deep ultraviolet laser at 266nm by using a Nd:YAG/Cr4+:YAG/YAG composite crystal
Optics & Laser Technology,Volume 63,50014,Pages 24-28,
Characterization of the optical properties of ArF laser irradiated Nd:YAG crystal
Optik,Volume 127, Issue 4,50016,Pages 1681-1684
Comparative study between Nd:GYSGG and Nd:YAG lasers passively Q-switched by a Cr:YAG crystal
Optik,Volume 156,50018,Pages 260-264
Crystal growth of high doped Nd:YAG
Optical Materials,Volume 26, Issue 4,50004,Pages 337-341
Crystal growth, Judd–Ofelt analysis and radiative properties of Nd:YAG single crystal grown by HDS
Journal of Luminescence,Volume 140,50013,Pages 135-137
Distribution of Neodymium and properties of Nd:YAG crystal by horizontal directional solidification
Journal of Crystal Growth,Volume 340, Issue 1,50012,Pages 130-134
Effect of XeCl laser irradiation on the defect structure of Nd:YAG crystals
Optics and Lasers in Engineering,Volume 60,50014,Pages 12-17
Fabrication and laser performance of polycrystal and single crystal Nd:YAG by advanced ceramic processing
Optical Materials,Volume 29, Issue 10,50007,Pages 1289-1294
Femtosecond laser irradiation on Nd:YAG crystal: Surface ablation and high-spatial-frequency nanograting
Applied Surface Science,Volume 441,50018,Pages 372-380

If you can’t find the Literature you want, Contact us to get the PDF      Get the Literature

Femtosecond laser written channel optical waveguide in Nd:YAG crystal
Optics & Laser Technology,Volume 58,50014,Pages 89-93
Formation of gaseous cavity defect during growth of Nd:YAG single crystals
Journal of Crystal Growth,Volume 367,50013,Pages 57-61
Gain and laser operation of 1.1%Nd:YAG crystal fibers
Optics Communications,Volume 197, Issues 4–6,50001,Pages 375-378
High repetition rate, high peak power burst mode laser with YAG/Nd:YAG/Cr4+:YAG composite crystal
Optik,Volume 175,50018,Pages 263-267
Highly doped Nd:YAG crystal used for microchip lasers
Optics Communications,Volume 197, Issues 4–6,50001,Pages 413-418
Investigation of multi-segmented Nd:YAG/NdYVO4 crystals and their laser performance end-pumped by a fiber coupled diode laser
Optik,Volume 179,50019,Pages 367-372
Laser diode pumped Nd:YAG crystals frequency summing 589nm yellow laser
Optik,Volume 127, Issue 2,50016,Pages 710-71
Mechanical, thermal and optical properties of the SPS-processed polycrystalline Nd:YAG
Optical Materials,Volume 38,50014,Pages 204-210
Nonlinear mixing of Nd:YAG lasers; harmonic and sum frequency generation
Optical Materials,Volume 65,50017,Pages 2-7
Optical spectroscopy in channel waveguides made in Nd:YAG crystals by femtosecond laser writing
Journal of Luminescence,Volume 128, Issues 5–6,50008,Pages 754-756
Photonic crystal structure in Nd:YAG laser crystals
Optical Materials,Volume 34, Issue 11,50012,Pages 1811-1814
Preparation and Properties of Yb:YAG and Nd:YAG Nanocrystals
Rare Metal Materials and Engineering,Volume 46, Issue 3,50017,Pages 591-595
Post-treatment of nanopowders-derived Nd:YAG transparent ceramics by hot isostatic pressing
Ceramics International,Volume 43, Issue 13,50017,Pages 10013-10019
Role of internal radiation during Czochralski growth of YAG and Nd:YAG crystals
International Journal of Thermal Sciences,Volume 45, Issue 2,50006,Pages 151-167
Solar pumped Nd:YAG laser, Optik – International Journal for Light and Electron
Optics,Volume 124, Issue 18,50013,Pages 3367-3370
Study of structural and optical properties of YAG and Nd:YAG single crystals
Materials Research Bulletin,Volume 63,50015,Pages 80-87
Study on growth techniques and macro defects of large-size Nd:YAG laser crystal
Journal of Crystal Growth,Volume 483,50018,Pages 200-205
Ultrafast laser inscribed cladding waveguides in Nd:YAG crystal for mid-infrared wavelength
Optics & Laser Technology,Volume 56,50014,Pages 382-386
Y-junctions based on circular depressed-cladding waveguides fabricated with femtosecond pulses in Nd:YAG crystal: A route to integrate complex photonic circuits in crystals
Optical Materials,Volume 72,50017,Pages 220-225
News

Parameter

Material and Specifications
Nd Concentration Tolerance (atm%)0.1- 2.5(+/-0.1)atm%
Orientation[001] or [110] or [111] <±0.5°
Parallelism10〞
Perpendicularity5ˊ
Surface Quality10-5(MIL-O-13830A)
Wavefront Distortionλ/[email protected] nm
Surface Flatnessλ/[email protected] nm
Clear Aperture>95 %
Chamfer<0.2×45°
Length Tolerance+0.5/-0mm
Thickness/Diameter Tolerance±0.05 mm
Maximum Dimensionsdia (3~12.7)×(3~150) mm
Damage Threshold>750 MW/cm2@1064 nm 10 ns 10 Hz
Chips<0.1 mm
Extinction Ratio>30 dB(depends on actual sizes )
Barrel Finish400 grit
Physical and Chemical Properties
Crystal Structurecubic – la3d
Lattice Constants12.01 Å
Density4.56 g/cm3
Melting Point1950 °C
Thermal Conductivity/(W·m-1·[email protected]°C)0.14 W
Specific Heat/(J·g-1·K-1)0.59
Rupture Stress1.3-2.6*103 kg/cm2
Thermal Expansion /(10-6·K-1@25°C )[100] Orientation–8.2
 [110] Orientation–7.7
 [111] Orientation–7.8
Hardness (Mohs)8.5
Young`s Modulus/GPa317
Shear Modulus/Gpa54.66
Extinction Ratio25 dB
Poisson Ratio0.25
Optical and Spectral Properties
Laser Transition4F3/2 →> 4I11/2
Photon Energy1.86×10-19 J
Laser Transition Wavelength, λl (nm)1064
Pump Transition Wavelength, λp (nm)808
Pump Transition Bandwidth, Δλp (nm)<4
Laser Transition Bandwidth, Δλl (nm)~0.6
Pump Transition Peak Cross Section, σp (E-20 cm2)6.7
Laser Transition Peak Cross Section, σl (E-20 cm2)28
Pump Transition Saturation Intensity, φp (kW/cm2)12
Laser Transition Saturation Intensity, φl (kW/cm2)2.6
Laser Transition Saturation Fluence, Γl,sat (J/cm2)0.6
Minimum Pump Intensity, Imin (kW/cm2)~0
Upper Laser Manifold Lifetime, τ(msec)0.26
Quantum Defect Fraction0.24
Fractional Heat Generation0.37
Refractive Index1.8197 @1.064 µm
Fluorescence Lifetime230 µs
Absorption and Emission Spectrum
Nd YAG Absorption Spectrum - Laser CrylinkNd YAG Emission Spectrum - Laser Crylink

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