Elliptical Nd:YAG Laser Line Dielectric Mirrors

Elliptical laser line mirrors are designed to provide a circular profile when used for 45 degree ND:YAG beam routing applications.

High efficiency 532 nm & 1064 nm reflectivity
Rs, Rp>99% at a laser line
Durable dielectric coatings
Borofloat®33 substrates
Ideal for 45 degree beam routing applications

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Description	Compatibility	Wavelength Region	Wavelength Range	Mirror Shape	Material	Avail.	Price
13E20DM.10Elliptical Dielectric Mirror, 33.02 x 46.7 mm, λ/10, 1030-1090 nm	UNIVERSAL	IR	1030-1090 nm	Elliptical	Borofloat® 33	In Stock	$228
13E20DM.11Elliptical Mirror, 33.02 x 46.7 mm, 532 nm Dielectric Laser Line	UNIVERSAL	VIS	532 nm	Elliptical	Borofloat® 33	In Stock	$232
18E20DM.10Elliptical Mirror, 46.7 x 66.04 mm, 1030-1090 nm Dielectric Laser Line	UNIVERSAL	IR	1030-1090 nm	Elliptical	Borofloat® 33	In Stock	$414

Specifications

Models
Wavelength Range	1030-1090 nm	532 nm	1030-1090 nm
Mirror Shape	Elliptical	Elliptical	Elliptical
Material	Borofloat® 33	Borofloat® 33	Borofloat® 33
Surface Flatness	λ/10 at 632.8 nm	λ/10 at 632.8 nm	λ/10 at 632.8 nm
Clear Aperture	≥central 80% of diameter	≥central 80% of diameter	≥central 80% of diameter
Reflectivity	R_s,R_p>99% @ 1030-1090 nm	R_s, R_p>99% @ 532 nm	R_s,R_p>99% @ 1030-1090 nm
Thickness	9.4 mm	9.4 mm	12.5 mm
Thickness Tolerance	±0.25 mm	±0.25 mm	±0.25 mm
Chamfers	0.38–1.14 mm face width	0.38–1.14 mm face width	0.38–1.14 mm face width
Chamfers Angle Tolerance	45° ±15°	45° ±15°	45° ±15°
Cleaning	See How to Clean Optics	See How to Clean Optics	See How to Clean Optics

Features

The Ideal Choice for 45° Beam Routing

Elliptical Mirrors used in Periscope Application

Elliptical mirrors are designed to present a circular mirror profile when mounted at a 45 degree angle. Round mirrors mounted at 45 degrees can't maintain a circular profile and may allow for parts of the beam to not be reflected. As a result elliptical mirrors are ideal for periscopes and other 45 degree beam routing applications.

532 nm Nd:YAG Laser Line Coating

Our DM.11 multilayer dielectric coating is optimized for the 2nd harmonic 532 nm Nd:YAG laser line. It offers greater than 99% efficiency for s-polarization or p-polarization at 0-45° angle of incidence.

1064 nm Nd:YAG Laser Line Coating

Our DM.10 multilayer dielectric coating is optimized for the 1064 nm fundamental harmonic Nd:YAG laser line. It offers greater than 99% efficiency for s-polarization or p-polarization at 0-45° angle of incidence.

Borofloat® 33 Substrates

Borofloat 33 is a high quality borosilicate glass that offers low thermal expansion and high thermal shock resistance. Its material properties and moderate cost make Borofloat 33 an ideal substrate for general purpose applications. For more information, please see our Optical Materials technical note.

Durable Dielectric Coatings

All dielectric coating construction is physically more durable than standard metallic coatings. Dielectric mirrors are more resistant to humidity, thermal changes, abrasion and salt exposure. They can also withstand repeated cleaning.