FemtoOptics™ Wedges for Dispersion Tuning

The FemtoOptics Dispersion Wedge family offers two size choices to fine tune dispersion in an ultrafast optical system. Designed for a very broad wavelength range at near normal angle of incidence, two identical wedges can be used to compensate for dispersion and angular deviation. Pairs of ultrathin wedges allow fine, continuous tuning of GDD. These thin glass wedges can also be used for rough tuning of the Carrier Envelope Phase (CEP).

Dispersion fine tuning over a wide dynamic range
Broadband antireflection coating applied to front and back surfaces
Ultrathin, small wedge angle 2.8 or 8 degrees
Large GDD tuning range
30x20 or 50x20 mm sizes

See All Features

Description	Compatibility	Price
23RQ12-02 Femtosecond Optimized Wedges for Dispersion TuningDispersion Wedge, FemtoOptics, 20 x 30 mm, 0.2 mm thick, Fused Silica, Uncoated	UNIVERSAL	$412
23RQ12-02-M Femtosecond Optimized Wedges for Dispersion TuningDispersion Wedge, Mounted, 20x30 mm, 0.2 mm thick, Fused Silica, Uncoated, FemtoOptics	UNIVERSAL	$554
25RB12-01UF.AR2 Femtosecond Optimized Wedges for Dispersion TuningDispersion Wedge, FemtoOptics, 20 x 50 mm, 0.5 mm thick, N-BK7, AR Coated	UNIVERSAL	$785
25RB12-01UF.AR2-M Femtosecond Optimized Wedges for Dispersion TuningDispersion Wedge, Mounted, 20x50 mm, 0.5 mm thick, N-BK7, AR Coated, FemtoOptics	UNIVERSAL	$895

Specifications

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The -M models include a mounted adapter that fits into any standard 1- or 0.5-in. mirror or lens holder

Features

Fine Tune Dispersion Over a Wide Dynamic Range

Because of the relatively small angle and large length of these optical wedges, dispersion can be finely tuned over a wide dynamic range. By using a pair of wedges, angular dispersion can be avoided. Popular applications include high harmonic generation, attosecond pulse generation, CEP (Carrier Envelope Phase) or applications using wedges in conjunction with high dispersion mirrors.

Pairs of ultra thin wedges allow fine, continuous tuning of the GDD. The extremely accurate GDD control enabled by thin glass wedges in conjunction with broadband dispersive mirrors is indispensable for the generation and manipulation of sub-10 femtosecond pulses.

Special care and attention should be taken when handling these ultrathin optics. Any small mishap may bring irreparable harm to the wedge. Handle at your own risk.

Mounted Wedges Setup Example

See the parts list of the shown setup example below.

Part No	Description	Quantity
25RB12-01UF.AR2-M	AR Coated, Mounted Wedge	2
HVM-1i	Top Adjust Mirror Mount	2
SP-1	1" Optical Mounting Post	2
SPH-1	Slim Optical Post Holder	2
422-1S	Miniature Ball Bearing Stage	2
TR-8Q20-10	Pack of Adaptors 1/4-20 to 8-32	1
TP-34	High Density Mounting Plate	2
SA2-06x12	Solid Aluminum Optical Breadboard	1

Typical GDD for 23RQ12-02

Typical GDD vs material insertion for the 20 x 30 mm ultra thin wedges with 2° 48' wedge angle.

Typical GDD for 25RB12-01UF.AR2

Typical GDD vs material insertion for the 20 x 50 mm ultra thin wedges with 8° wedge angle.

Easy Mounting for Mounted Version

The mounted versions of the wedges fit easily into Newport's 1- or 0.5-in. diameter mirror mounts or lens holders. The wedges are offered with or without coating. A broadband antireflection coating minimizes insertion losses at near normal incidences. Additional insertion losses can be minimized using the wedges at Brewster's angle. The mounting example seen includes the 25RB12-01UF.AR2-M optical wedge in the U100-A2K Ultima Mirror Mount.