Mirrors

Optical mirrors are used to reflect laser and imaging beams in applications such as beam steering, interferometry, and illumination.
OptoSigma offers a broad range of mirrors for use in medical, metrology, semiconductor, and scientific systems, including options with ultralow loss, high flatness, and dispersion control.

Custom mirrors are also available to meet specific optical requirements.

Selection Guide for Optical Mirrors

Groups	Description	Mirror Shapes and Sizes(mm)	Average Reflectivity and Wavelength Ranges	Flatness Options	Material Options	Mount Families
Broadband Metallic Mirrors	These mirrors are affordable with good reflectance in a wide range of wavelength. Mirrors are available in aluminum, silver and gold coating and at any angle of incidence. Light absorption coating, reflection is slightly reduced.	Round: φ10, (0.5”), 15, 20, 25, (1.0”), 30, 40, 50, (2.0”), 60, 80, 100, 130, 150 Square: 10, (0.5”), 15, 20, 25,(1.0”), 30, 40, 50, (2.0”), 60, 80, 100, 130, 150, 250 Rectangular: 10x15, 15x25, 20x30, 25x35	Aluminum 80-95% (See Graph) Silver 97.5%(450～2000nm) Gold 80-95% (See Graph)	λ, λ/4, λ/10, λ/20	Hard Glass, BK7	Gold Mirrors Silver Mirrors Aluminum Mirrors
Dielectric Mirrors	These mirrors are designed for high reflectance with low loss. The coating is resistant to hard scratches. To be used from 0-45 degrees angle of incidence.	Round: φ10, (0.5”), 15, 20, 25, (1.0”), 30, 40, 50, (2.0”)	95-99% - 193, 248, 266, 355, 532, 1064nm 97-98% - 245-700, 400-1100, 400-2000, 300-2000nm >99% - 157, 193, 248, 266, 282, 308, 325nm	λ/10	BK7	Laser Line Dielectric Broadband Dielectric Wide Angle Dielectric High-Power Dielectric
Super Mirrors	Our Super mirrors are ultra-high performance mirrors which provide near 100% reflection in order to maximize the performance of a Fabry-Perot resonator cavity.	Round: (0.5”), 25, (1.0”), 30, 50	>99.99 @ 532nm >99.99 @1064nm	λ/10	Synthetic Fused Silica	Super Mirrors
Femtosecond Laser Mirrors	This mirror is designed to provide low wavelength dispersion suitable for use with ultra-short pulse lasers with 100 femtosecond or less.	Round: (0.5”), (1.0”), 30	>99.8 @ 700-900	λ/10	Synthetic Fused Silica, BK7	Low Dispersion Negative Dispersion
High Surface Flatness Mirrors	High Surface Accuracy Mirrors provide a guaranteed surface accuracy of λ/10 after coating.	Round: (0.5”), (1.0”), 30, 50, (2.0”)	＞99% @ 248, 266, 308, 355, 532, 1064nm	λ/10	Synthetic Fused Silica	High Surface Flatness Mirrors Mounted, High Surface Flatness Mirrors
Curved Mirrors	A curved mirror converts diverging light from a point of light source into parallel light.	Round: φ10, (0.5”), 15, 20, 25, (1.0”), 30, 40, 50 Ellipse: φ64, 76, 86, 105, 113, 124, 128, 148 Paraboloid: φ(0.5”),15, 17, 30	Aluminum 80-95% (See Graph)	λ/2	BK7, Tempax	OAPs Paraboloid Mirrors Ellipsoidal Mirrors Concave Aluminum w/ Protective Coating Concave Aluminum w/o Protective Coating