Sinoceramics | Optical Components

Nd:YLF

Optical Properties

Transparency Range:	180-6700nm
Peak Stimulated Emission Cross Section:	1.8x10^-19cm² (E\|\|C) @ 1064nm 1.2x10^-19cm² (E_perpC) @ 1064nm
Spontaneous Fluorescence Lifetime:	485 µs for 1% Nd doping
Seatter Losses:	< 0.2% per cm
Peak Absorption Coefficient (for 1.2% Nd):	a = 10.8cm^-1 (792.0nm E\|\|C) a = 3.59cm^-1 (792.0nm E_perpC)
Laser Wavelength:	1047nm (\|\|c, a-cut crystal) 1053nm (_perpc, a-cut crystal)

Physical

Chemical Formula:	LiY_1.0-xNd_xF₄
Space Group:	14_1/a
Nd atoms/m³:	1.4x10²⁰ atoms/cm³ for 1% Nd doping
Modulus of Elasticity:	85GPa
Crystal Structure:	Tetragonal
Cell Parameters:	a = 5.16A , c = 10.85A
Melting Point:	819°C
Mohs Hardness:	4 - 5
Density:	3.99g/cm³
Thermal Conductivity:	0.063W/m /K
Specific Heat:	0.79J/gK
Thermal Conductivity:	8.3x10^-6/K\|\|C 13.3x10^-6/K_perpC

Index of Refraction

Wavelength	n_a	n_c
262nm	1.485	1.511
350nm	1.473	1.491
525nm	1.456	1.479
1050nm	1.448	1.470
2065nm	1.442	1.464

dn/dT

Wavelength	E\|\|C	E_perpC
436nm	-2.44x10^-6/°C	-0.54x10^-6/°C
578nm	-2.86x10^-6/°C	-0.91x10^-6/°C
1060nm	-4.30x10^-6/°C	-2.00x10^-6/°C

The Sellmeier Equations (λ in µm)
n_o² = 1.38757 + 0.70757λ² / (λ² - 0.00931) + 0.18849λ² / (λ² - 50.99741)
n_e² = 1.31021 + 0.84906λ² / (λ² - 0.00876) + 0.53607λ² / (λ² - 134.9566)

Sinoceramics's Nd:YLF Production Capabilities:

Rod sizes from 2mm-10mm in diameter and from 1mm-150mm in length

Orientation of rod axis to crystal axis is within 1°

Polished only or AR coated rods

Nd dopant concentrations between 0.4-1.2%

Large rod and slab dimensions and non-standard dopant concentrations are available upon request

Specifications

Standard Dopant:	1.1 ± 0.1%
Wavefront Distortion:	< λ /4 per inch @ 633nm
Parallelism:	< 10 arc seconds
Perpendicularity:	< 5 arc minutes
Chamfer:	0.13 ± 0.07mm @ 45°
Surface Quality:	0/5 scratch and dig
End Coating:	R < 0.15% @ 1047/1053nm
Surface Flatness:	λ /8 @ 532.8nm