Cavity Ring-Down – CRD Reflectance characterization of ultra low loss mirrors

LD-PD's Ultra low loss mirrors with reflectance of more than 99.9% are impossible to characterize by standard reflectance measurements such as spectrophotometry because of measurement uncertainties in the range of 0.5%.This can be overcome with the help of the cavity ring-down (CRD) technique, which enables reflectance measurements of 99.99% or even 99.999%.

Name	Model	Description	Parameter	Price
1392nm 1inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-246-59-1392-1000-0 Stock NO.: A80150657	Central Wavelength 1392nm ; Size 1inch; Radius of curvature 1000mm; Reflectance values ＞99.999%;	Central wavelength: 1392nm Lead Time: in stock	[Please inquire] Call us
1392nm 0.5inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-126-59-1392-1000-0 Stock NO.: A80150658	Central Wavelength 1392nm ; Size 0.5inch; Radius of curvature 1000mm; Reflectance values ＞99.999%	Central wavelength: 1392nm Lead Time: in stock	[Please inquire] Call us
1512nm 1inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-246-59-1512-1000-0 Stock NO.: A80150659	Central Wavelength 1512nm ; Size 1inch; Radius of curvature 1000mm; Reflectance values ＞99.999%	Central wavelength: 1512nm Lead Time: in stock	[Please inquire] Call us
1512nm 0.5inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-126-59-1512-1000-0 Stock NO.: A80150660	Central Wavelength 1512nm ; Size 0.5inch; Radius of curvature 1000mm; Reflectance values ＞99.999%	Central wavelength: 1512nm Lead Time: in stock	[Please inquire] Call us
1572nm 0.5inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-126-49-1572-1000-45 Stock NO.: A80160426	Central Wavelength 1572nm ; Size 0.5inch; Radius of curvature 1000mm; Reflectance values ＞99.99%; 45deg	Central wavelength: 1572nm Lead Time: in stock	[Please inquire] Call us
1580nm 1inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-246-49-1580-1000-0 Stock NO.: A80160148	Central Wavelength 1580nm ; Size 1inch; Radius of curvature 1000mm; Reflectance values ＞99.99%	Central wavelength: 1580nm Lead Time: in stock	[Please inquire] Call us
1650nm 2inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-508-49-1650-1000-0 Stock NO.: A80161154	Central Wavelength 1650nm ; Size 2inch; Radius of curvature 1000mm; Reflectance values ＞99.99%	Central wavelength: 1650nm Lead Time: in stock	[Please inquire] Call us
1742nm 1inch CRD ultra low loss mirrors [PDF] [RFQ]	CRD-246-49-1742-1000-0 Stock NO.: A80160153	Central Wavelength 1742nm ; Size 1inch; Radius of curvature 1000mm; Reflectance values ＞99.99%	Central wavelength: 1742nm Lead Time: in stock	[Please inquire] Call us

Parameter

Features

● Reflectance values > 99.995%

● Angles of incidence: 0°or 45°

● s and p polarization, separately

● Easy and reproducible alignment for up to Ø=2 inch optics

● Wavelength range: 355nm-15um

● Customized setups and measurement service

Specifications

Parameter	unit	Index
Dimension	Inch	0.5/1/2inch
Thickness	mm	6.35
Wavelength	nm	CWL±50nm
Reflectance values	%	≥ 99.99
Operating temperature	℃	-5 to 70
Storage temperature	℃	-40 to 85

Tolerances	Index
Diameter Ø:	+0.0/-0.1 mm
Thickness t:	±0.1 mm
Flatness:	3/0.1 (0.1/0.05) compares to λ/20
Radius of curvature:	±1%
Centering/Wedge:	<5 min. of arc
Chamfer:	0.1–0.3 mm x 45°
Clear aperture:	> 80%
Surface imperf. tol.: 5/3 x 0.025

Cavity ring down curve

Dimension

Working Theory

Measurement signal of a dielectric mirror with

Measurement principle. a reflectance of > 99.98%.

Application

● CRDS

● Ring laser Gyro

● TDLAS Cell

Ordering Info

CRD-①-②-③-④-⑤-⑥ CRD: Cavity Ring-Down

①: Size	126: 0.5inch , 246: 1inch, 508: 2inch
②: Reflectance values	39: 99.9%，49:＞99.99%, 59:＞99.999%
③: Wavelength	1392: 1392nm，1512: 1512 nm, 1572: 1572nm,1600: 1600nm,1653: 1653nm,1742: 1742nm, SS: Specify
④: Radius of curvature	1000: 1000mm, 500: 500mm, 0: Flat Mirror
⑤: Angles of incidence	0: 0°, 45: 45°

Cavity Ring-Down – CRD Reflectance characterization of ultra low loss mirrors

Product model

Parameter

Related