Wavelength Separators

Dichroic Mirrors

Dichroic Mirrors | PP-UVFS-25.4-6.35-DM77-AR120

If an official quotation is needed or products are not in stock, please send us a request

Material: UVFS (Corning 7980 0F)
Diameter: 25.4 mm (+0/-0.1 mm)
Thickness: 6.35 mm (+/-0.1 mm)
Clear aperture: min. 20 mm centered.
Surface quality, S1: 10-5 S-D over CA (MIL-PRF-13830B)
Surface flatness, S1: λ/10 @ 633 mm over any 10 mm aperture within CA
Surface S2: commercial polish
Parallelism error: < 10 arcsec
Protective chamfers: 0.1-0.4 mm x 45°
Chips: < 0.2 mm stoned

Coatings (IBS):
S1 (arrow mark): HRsp>99.5% @ 515 nm + Rs<5% @ 1030 nm, AOI=45°
S2: ARsp<0.6% @ 1030 nm, AOI=45°

Inspection Report

Raw Spectral Data

HRsp>99.5% @ 515 nm + Rs<5% @ 1030 nm, AOI=45° (DM77-AR120)

Calculated reflectance values at 45° angle of incidence

Calculated reflectance values at 45° angle of incidence

Calculated reflectance values at 45° angle of incidence

In-stock items ship the next business day via DHL. Estimated delivery time: 1–2 business days (EU), 3–5 business days (Rest of World). View full shipping policy.

These ultrafast IBS-coated dichroic mirrors are wavelength-separation optics for Yb-based femtosecond and picosecond laser systems, enabling clean harmonic routing while preserving beam quality and pulse duration. They are widely used as harmonic separators in frequency-conversion layouts to reflect the 515 nm second harmonic and transmit the 1030 nm fundamental, allowing independent beam delivery, attenuation, and diagnostics for each wavelength. Their high LIDT, low absorption, and minimal Group Delay Dispersion (GDD) support reliable long-term operation in high-peak-intensity ultrafast beam paths where precise spectral splitting is critical.

Mirror can be used for Yb:YAG based ultrafast laser systems, such as:

  • “PHAROS” and “CARBIDE” by Light Conversion
  • “Monaco” series by Coherent
  • “FemtoBlade™” series by Lumentum
  • “TruMicro” series by TRUMPF
  • “IceFyre® FS” series by Spectra-Physics
  • “Satsuma” and “Tangor” series by Amplitude
  • “FemtoLux” series by EKSPLA
  • “FSL1030X2” by Thorlabs
  • “Jasper X1” by Fluence technology
  • “FS Series” by Photonics Industries

OPTOMAN’s Ultrafast IBS-coated Dichroic Mirrors are designed to provide precise wavelength separation, while maintaining high LIDT and minimal Group Delay Dispersion (GDD) for preserving pulse duration and handling high peak intensity of femtosecond and picosecond laser systems.

This harmonic separator is optimized for reflecting 515 nm at a 45° angle of incidence, while transmitting 1030 nm, providing precise wavelength separation for ultrashort laser pulses. With reflectance for II harmonic and transmittance for I harmonic, this filter is optimized for Yb:YAG based ultrafast laser systems.

You may also like