Broadband Dielectric Mirrors

Overview

Efficiency Redefined: Durable, High-Reflectivity Mirrors for Every Wavelength

The VenusLab VLBB Broadband Dielectric Mirror Series is engineered to meet high-reflectivity demands from visible to near-infrared spectrums. By depositing alternating layers of high and low refractive index materials on a K9 substrate, we create a dense dielectric stack.

This process not only boosts reflectivity to 99.0% ~ 99.5% but also eliminates the oxidation and absorption issues common with metallic mirrors. Available in standard 45° AOI (Angle of Incidence) and select 0° models, the coating's superior mechanical hardness withstands repeated cleaning, making it a reliable partner for long-term optical system construction.

Key Applications

Beam Steering : General-purpose folding of laser beams in labs.
Microscopy & Imaging : Maximizing signal strength in fluorescence or visible imaging systems.
Diode Laser Systems : High efficiency reflection for pump lasers or NIR diodes.
Telecom Testing : C-Band and L-Band optical setups (1450-1650nm).

Qualification

Broadband Dielectric Mirror Technical Specifications

Technical Parameter	Specification Data
Substrate Material	K9 (BK7 Equivalent)
Coating Type	Multi-layer Broadband Dielectric
Reflectivity	99.0% ~ 99.5% (Depending on range)
Surface Quality	High mechanical hardness, Cleanable
Clear Aperture	> 90%
Standard Incidence Angle	45° (Standard), 0° (Select Models)
Damage Threshold	Higher than metallic films

Selection Chart

VLBB Series Ordering Information & Model List

Model	Angle (°)	Wavelength (nm)	Dia (mm)	Thk (mm)	CA	R (%)
VLBB-K9-20-VIS	45	400-700	20	4	>90%	99.5
VLBB-K9-25A-VIS	45	400-700	25.4	5	>90%	99.5
VLBB-K9-30-VIS	45	400-700	30	5	>90%	99.5
VLBB-K9-50-VIS	45	400-700	50	5	>90%	99.5
VLBB-K9-12-NIR	45	650-1050	12.7	3	>90%	99.5
VLBB-K9-20-NIR	45	650-1050	20	4	>90%	99.5
VLBB-K9-25A-NIR	45	650-1050	25.4	5	>90%	99.5
VLBB-K9-30-NIR	45	650-1050	30	5	>90%	99.5
VLBB-K9-50-NIR	45	650-1050	50	5	>90%	99.5
VLBB-K9-25A-WIDE	45	400-1100	25.4	5	>90%	99.0
VLBB-K9-30-WIDE	45	400-1100	30	5	>90%	99.0
VLBB-K9-50-WIDE	45	400-1100	50	5	>90%	99.0
VLBB-K9-12-IR	45	1450-1650	12.7	2	>90%	99.0
VLBB-K9-25A-IR	45	1450-1650	25.4	5	>90%	99.0
VLBB-K9-50-IR	45	1450-1650	50	5	>90%	99.0
VLBB-K9-25A-VIS-0	0	400-700	25.4	5	>90%	99.5
VLBB-K9-30-VIS-0	0	400-700	30	5	>90%	99.5