Calcium Fluoride (CaF₂)

Calcium Fluoride 1

Calcium Fluoride (CaF₂) is a significant material in optics, prized for its wide transparency range from the ultraviolet (UV) to the infrared (IR) spectrum. This extensive transmission range makes it ideal for use in a variety of optical applications, including UV and IR lenses, windows, and prisms in imaging systems and spectroscopy. CaF₂ is known for its low refractive index and minimal dispersion, which help reduce chromatic aberration in optical systems. Additionally, it has excellent thermal and mechanical properties, making it suitable for high-power laser systems and harsh environmental conditions. These qualities make CaF₂ a versatile and valuable material in advanced optical technologies.

Optical Properties

Refractive Index: 1.39908

Thermal Co-efficient of Refractive Index: -10.6 x 10-6

Transmission Range: 0.2 – 9.0 µm

Thermal Properties

Thermal Linear Expansion: 18.85 x 10-6 /K

Thermal Conductivity: 9.71 W m⁻¹ K⁻¹

Specific Heat Capacity:854 J Kg⁻¹ K⁻¹

Melting Point: 1360 °C

Mechanical Properties

Density: 3.18 g/cc

Knoop Hardness: 158.3

Young Modulus: 75.8 GPa

Shear Modulus: 33.77 GPa

Poisson Ratio: 0.26

Calcium Fluoride 3
Wavelength (µm)Refractive Index
0.1491.5800
0.1611.5490
0.1951.5000
0.2001.4950
0.2221.4800
0.2481.4680
0.2661.4621
0.2801.4584
0.3001.4540
0.3371.4481
0.4001.4419
0.4861.4370
0.5881.4339
0.6561.4325
0.6871.4320
0.7281.4314
0.8841.4298
1.0141.4288
1.1001.4283
1.2501.4275
1.6501.4256
1.9001.4244
2.0581.4236
2.4501.4214
2.7001.4199
2.8001.4192
3.0501.4175
3.4001.4149
4.0001.4096
4.4001.4014
5.00013991
5.3041.3952
5.8931.3871
6.4831.3782
7.0721.3681
7.6611.3570
8.2511.3444
8.8401.3308
9.4291.3161

Inquiry Form

Contact Form

We suggest using your organization's email with its own domain (if any).

Scroll to Top