Ultrafast Concave Mirrors with Low Group Delay Dispersion

These concave ultrafast mirrors are designed to focus and redirect with minimal group delay dispersion (GDD).

Minimal Group Delay Dispersion (GDD)
Focal lengths from 50 to 1500 mm
Rs >99% from 700-930 nm

Description	Compatibility	Avail.	Price
10Q100UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 25.4 mm Diameter, 100 mm EFL, 700-930 nm	UNIVERSAL	Discontinued
10Q250UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 25.4 mm Diameter, 250 mm EFL, 700-930 nm	UNIVERSAL	Discontinued
10Q500UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 25.4 mm Diameter, 500 mm EFL, 700-930 nm	UNIVERSAL	Discontinued
10Q50UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 25.4 mm Diameter, 50 mm EFL, 700-930 nm	UNIVERSAL		$256
20Q1000UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 50.8 mm Diameter, 1000 mm EFL, 700-930 nm	UNIVERSAL		$532
20Q1500UF.25 Concave Ultrafast MirrorsConcave Mirror, Ultrafast, 50.8 mm Diameter, 1500 mm EFL, 700-930 nm	UNIVERSAL	Discontinued

Features

High Reflectance UF.25 Ultrafast Coating

UF.25 ultrafast mirror coating is designed to provide maximum reflectivity and bandwidth with minimum effect on pulse dispersion. Careful thin film design and an advanced coating process result in a broadband mirror with exceptional performance characteristics. This coating is optimized at 45° AOI for steering ultrafast pulsed lasers and provides simultaneous reflectance for both S- and P-polarized light, over 99% reflectance from 730-870nm for P-polarization and 700-930nm for S-polarization.

Low GDD and the Cubic Term

Group delay dispersion (GDD) and the cubic term of the phase expansion are shown below for reference. True mirror performance can be affected by manufacturing tolerances and repeatability. Newport minimizes these effects with the use of state-of-the-art thin film production equipment and computer controlled processes. These mirrors have been successfully field tested at several university and industrial laboratories engaged in ultrafast studies and have been found to have high performance very closely matching these calculated curves.

Leaky Mirror

The rear surface of the low GDD ultrafast mirror is uncoated and polished to allow undistorted transmission of leaked ultrafast beams. A tiny component of incident ultrafast beam will transmit through the mirror and may be measured to characterize the ultrafast pulses.

High Laser Damage Threshold

Our ultrafast laser mirrors have been laboratory tested for laser damage. They were found to withstand 1 TW/cm² peak power with 100 fsec pulses at 5 kHz at 800 nm.