ZnSe window designed for kW-level CO2 Laser

ZnSe Windows

Zinc Selenide Windows(ZnSe) are primarily used for transmissive optics. They are made exclusively with high quality "Laser grade" material that can be used even in the kW range CO2 Laser. ZnSe window with AR Coating have a transmittance of T > 99.4 % at 10.6 µm.
Znse is ideal for optical systems that incorporate a 10.6 µm CO2 laser and a 633 nm He-Ne alignment laser due to its low absorption in the red portion of the visible spectrum.
Zinc Selenide (ZnSe) is a relatively soft material with a Knoop Hardness of 120, making it susceptible to scratches. It is not recommended for use in harsh environments. When handling ZnSe, it is important to apply uniform pressure and wear Latex finger cots or gloves to prevent contamination and maintain its optical integrity.

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General Product

Specification

FAQS

Part NO.

Material

Diameter

Thickness

Flatness

Surface Quality

Parallelism

Coated

Delivery

Price

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Part NO.	Material	Diameter	Thickness	Flatness	Surface Quality	Parallelism	Coated	Delivery	Price	Add to CART
ZnSe Window 01	Zinc Selenide	5 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 02	Zinc Selenide	5 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 03	Zinc Selenide	10 mm	1.5 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 04	Zinc Selenide	10 mm	1.5 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 05	Zinc Selenide	10 mm	1.5 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$60
ZnSe Window 06	Zinc Selenide	10 mm	1.5 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$60
ZnSe Window 07	Zinc Selenide	12.5 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 08	Zinc Selenide	12.5 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 09	Zinc Selenide	12.5 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$60
ZnSe Window 10	Zinc Selenide	12.5 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$60
ZnSe Window 11	Zinc Selenide	12.5 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 12	Zinc Selenide	12.5 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 13	Zinc Selenide	12.5 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$60
ZnSe Window 14	Zinc Selenide	12.5 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$60
ZnSe Window 15	Zinc Selenide	12.7 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 16	Zinc Selenide	12.7 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 17	Zinc Selenide	12.7 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$60
ZnSe Window 18	Zinc Selenide	12.7 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$60
ZnSe Window 19	Zinc Selenide	12.7 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$60
ZnSe Window 20	Zinc Selenide	12.7 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$60
ZnSe Window 21	Zinc Selenide	12.7 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$60
ZnSe Window 22	Zinc Selenide	12.7 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$60
ZnSe Window 23	Zinc Selenide	20 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 24	Zinc Selenide	20 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 25	Zinc Selenide	20 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 26	Zinc Selenide	20 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 27	Zinc Selenide	25 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 28	Zinc Selenide	25 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 29	Zinc Selenide	25 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 30	Zinc Selenide	25 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 31	Zinc Selenide	25 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 32	Zinc Selenide	25 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 33	Zinc Selenide	25 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 34	Zinc Selenide	25 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 35	Zinc Selenide	25 mm	3 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 36	Zinc Selenide	25 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 37	Zinc Selenide	25 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 38	Zinc Selenide	25 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 39	Zinc Selenide	25 mm	5 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 40	Zinc Selenide	25 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 41	Zinc Selenide	25 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 42	Zinc Selenide	25 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 43	Zinc Selenide	25.4 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 44	Zinc Selenide	25.4 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 45	Zinc Selenide	25.4 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 46	Zinc Selenide	25.4 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 47	Zinc Selenide	25.4 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 48	Zinc Selenide	25.4 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 49	Zinc Selenide	25.4 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 50	Zinc Selenide	25.4 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 51	Zinc Selenide	25.4 mm	3 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 52	Zinc Selenide	25.4 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 53	Zinc Selenide	25.4 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 54	Zinc Selenide	25.4 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 55	Zinc Selenide	25.4 mm	5 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$70
ZnSe Window 56	Zinc Selenide	25.4 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$70
ZnSe Window 57	Zinc Selenide	25.4 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$70
ZnSe Window 58	Zinc Selenide	25.4 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$70
ZnSe Window 59	Zinc Selenide	30 mm	3 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$90
ZnSe Window 60	Zinc Selenide	30 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$90
ZnSe Window 61	Zinc Selenide	30 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$90
ZnSe Window 62	Zinc Selenide	30 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$110
ZnSe Window 63	Zinc Selenide	40 mm	4 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$110
ZnSe Window 64	Zinc Selenide	40 mm	4 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$110
ZnSe Window 65	Zinc Selenide	40 mm	4 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$110
ZnSe Window 66	Zinc Selenide	40 mm	4 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$110
ZnSe Window 67	Zinc Selenide	50 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 68	Zinc Selenide	50 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 69	Zinc Selenide	50 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 70	Zinc Selenide	50 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 71	Zinc Selenide	50 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 72	Zinc Selenide	50 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 73	Zinc Selenide	50 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 74	Zinc Selenide	50 mm	3 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 75	Zinc Selenide	50 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 76	Zinc Selenide	50 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 77	Zinc Selenide	50 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 78	Zinc Selenide	50 mm	5 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 79	Zinc Selenide	50 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 80	Zinc Selenide	50 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 81	Zinc Selenide	50 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 82	Zinc Selenide	50.8 mm	1 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 83	Zinc Selenide	50.8 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 84	Zinc Selenide	50.8 mm	1 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 85	Zinc Selenide	50.8 mm	2 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 86	Zinc Selenide	50.8 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 87	Zinc Selenide	50.8 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 88	Zinc Selenide	50.8 mm	2 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 89	Zinc Selenide	50.8 mm	3 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 90	Zinc Selenide	50.8 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 91	Zinc Selenide	50.8 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 92	Zinc Selenide	50.8 mm	3 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 93	Zinc Selenide	50.8 mm	5 mm	λ/4	20/10	2 arcmin	Uncoated	2 Weeks	$130
ZnSe Window 94	Zinc Selenide	50.8 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$130
ZnSe Window 95	Zinc Selenide	50.8 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$130
ZnSe Window 96	Zinc Selenide	50.8 mm	5 mm	λ/4	20/10	2 arcmin	AR/AR@(8000-12000)nm	2 Weeks	$130
ZnSe Window 97	Zinc Selenide	75 mm	6 mm	λ/4	40/20	2 arcmin	Uncoated	2 Weeks	$200
ZnSe Window 98	Zinc Selenide	75 mm	6 mm	λ/4	40/20	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$200
ZnSe Window 99	Zinc Selenide	75 mm	6 mm	λ/4	40/20	2 arcmin	AR/AR@(3000-12000)nm	2 Weeks	$200
ZnSe Window 100	Zinc Selenide	76.2 mm	6 mm	λ/4	40/20	2 arcmin	Uncoated	2 Weeks	$200
ZnSe Window 101	Zinc Selenide	76.2 mm	6 mm	λ/4	40/20	2 arcmin	AR/AR@(1650-3000)nm	2 Weeks	$200
ZnSe Window 102	Zinc Selenide	101.6 mm	6 mm	λ/2	40/20	2 arcmin	Uncoated	5 Weeks	$350
ZnSe Window 103	Zinc Selenide	127 mm	6 mm	λ/2	40/20	2 arcmin	Uncoated	5 Weeks	$450

Growing Method	Chemical Vapor Deposition(CVD)
Melting Point	1525℃
Transmission Band	0.6-20um
Bulk Absorption Coefficient	5X10-4cm-1@10.6um
Density	5.268g/cm3
Refractive Index	2.4015 at 10.6um
Young’s Modulus	67.2 GPa
Thermal Conductivity	0.18W/cm/℃
Specific Heat	0.356J/g/℃
Thermal Expansion	7.57x10-6/℃ at 20℃

Diameter	+0/-0.10mm
Length	+/-0.2mm
Chamfer	0.20+/-0.10mm @ 45°
Flatness(@10.6um)	λ/10 @ 10.6μm
Parallelism	< 40 arc Seconds
Perpendicularity	< 5 arc min
Surface Quality	40/20

What is the transmittance of the ZnSe window ?

The znse window transmission without coating.

The znse window transmission with AR coating.

How does Zinc Selenide (ZnSe) work in 10.6 µm CO2 Laser ?

Zinc Selenide (ZnSe) is commonly used in CO2 laser systems due to its high transmittance at the laser's wavelength of 10.6 micrometers (µm). ZnSe serves multiple purposes in CO2 lasers:

Optics Material: ZnSe is used as an optical material in CO2 laser systems. It can transmit the laser beam efficiently without significant losses, allowing the laser energy to pass through with minimal absorption.
Beam Delivery: ZnSe lenses and windows are utilized to shape and deliver the laser beam within the laser system. These components help focus, collimate, or steer the laser beam to achieve the desired beam characteristics and direct it to the target area.
Laser Cavity: ZnSe is employed as an optical element in the laser cavity of CO2 lasers. It may act as an output coupler or a partial reflector to establish the desired feedback and enable the generation of a coherent laser beam.
Laser Processing: ZnSe is also used as a focusing lens in CO2 laser processing systems such as cutting, engraving, marking, and welding. It helps concentrate the laser beam to a small spot size, allowing precise and controlled material removal or modification.

In summary, ZnSe plays a crucial role in CO2 laser systems by facilitating the efficient transmission of the laser beam, shaping and delivering the beam, and serving as an optical element in the laser cavity. It enables precise laser processing in applications such as material processing, cutting, engraving, and more.