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REO Introduces Broadband Mirrors for Ultrafast Lasers


These mirrors deliver high reflectivity from 650 nm to 1100 nm, as well as minimal group velocity dispersion and third order dispersion.

REO, a leading manufacturer of high volume precision optical solutions, has introduced a new series of mirrors that support very broadband operation in Ti:S ultrafast lasers.  Specifically, these mirrors offer high reflectivity (>99.7%) from 650 nm to 1100 nm, as well as minimal group velocity dispersion (GVD) and third order dispersion (TOD), thus enabling near transform-limited pulse performance over the entire Ti:S tuning range.  Coatings for these optics are fabricated utilizing ion beam sputtering (IBS).  This technology delivers the refractive index and layer thickness precision necessary to reliably meet both performance and GVD/TOD specifications, and also produces a fully densified film with exceptional long term environmental stability. 

These high reflectors can be designed for operation anywhere in the 0° to 45° angle of incidence range, and are typically supplied on fused silica substrates over the 0.25” to 3” diameter range.  Nominal surface flatness for these mirrors is λ/10 at 632.8 nm, and surface quality is 10-5.  REO can also readily customize the center wavelength, bandwidth and dispersion characteristics of these coatings, and can fabricate these mirrors on a broad range of custom substrate materials and sizes.

This type of high performance, broadband optics are key to enabling the next generation of widely tunable ultrafast laser oscillators for demanding applications such as multi-photon excitation microscopy, seeding terawatt amplifiers, and CEP-stabilized systems.  In particular they support the new generation of one-box laser oscillators where wavelength tuning and other output parameters are adjusted in a simple push-button operation rather than by physically exchanging cavity optics with limited bandwidth.

About REO
REO produces high precision thin film coatings, optics and opto-mechanical assemblies for the ultraviolet, visible and infrared. Located in Boulder, CO, the company primarily services medium to high volume OEMs including manufacturers of defense and aerospace systems, laser systems, semiconductor tools, medical systems, life sciences instrumentation and telecom equipment.  REO is a privately held company.  For more information, contact Mark Damery, Vice President and General Manager of Worldwide Sales, at +1-720-562-3213, e-mail MarkD@reoinc.com, www.reoinc.com, or Susan Anway, Vice President of Finance and Chief Financial Officer at +1-720-562-3206, e-mail SueA@reoinc.com.

Contact REO to have us start thinking about you. 303.938.1960