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Dichroic Mirrors

combine or separate two or more beams with different wavelengths.

Customized dichroic mirrors that are suitable for your individual application are manufactured upon request. 

Standard and Customized Dichroic mirrors

Dichroic mirrors are used to combine beams or to split two beams that have different wavelengths.

With a long-pass mirror, the long wavelengths are transmitted while the short ones are reflected. Short-pass mirrors allow the short wavelengths to pass and reflect the long ones.

On request, we also develop complex coating designs with multiple transmission and reflection ranges. Such optics are used e.g. in modern laser material processing, where the working plane is observed in different spectral ranges.


Follow these “golden rules” to find the best mirror design for your application:

  • Bandwidth:
    The bandwidth for the reflected part of the beam is limited. For the best possible beam separation or combination, it is important to allow a wavelength range to be transmitted and individual wavelengths to be reflected.
    Examples: HR1064HT400-700;HR355HT532+1064
  • Polarization:
    The absolute degree of reflection is higher for s-polarized light than it is for p-polarized light. The opposite relation applies for transmissions. Therefore, keep the polarizations in mind when planning your assembly.
  • Reflection better than transmission:
    The efficiency is higher for the reflected beam. If your application requires high efficiency at a certain wavelength, you should take this into account when selecting the mirror.
  • Beam combination of SHG, THG, ...:
    Reflection peaks occur at λ/2, λ/3, etc. of the reflected wavelength. In this case, you should prefer a long-pass coating - i.e. an HR355HT532+1064 coating rather than an HR1064+532HT355 coating.


  • Conçu sur mesure pour votre application
  • Simplifie votre conception visuelle


  • Wavelength range 248nm - 3000nm
  • Different specifications upon request


Customized Dichroic Mirrors
For PRocesS Control

We also provide customized dichroic mirrors that are suitable for you individual application.

Especially for monitoring applications there is a variety of functions in a dichroic mirror.



In a typcial monitoring application dichroic mirrors are needed for bending of the laser wihich is used for the material processing. At the same time a part of the pilot laser for positioning needs to be reflected for positioning of the workpiece in the working area. 

Additionally for process control purposes the optics has to tansmit the visible range and light in the NIR above the laser wavelength. 

As an additional feature also special measuring systems like OCT (optical coherence tomography) for depth measurement at a wavelength close to the high-power laser wavelength will be transmitted.

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Laser Optics

LASER COMPONENTS USA - Your competent partner for optical and optoelectronic components in the United States.

Welcome to LASER COMPONENTS USA, Inc., your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, and more is worth every Dollar ($/USD). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:

116 South River Road
Building C
Bedford, NH 03110

Phone: +1 603 821 7040
Email: info(at)

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Sean Wilson
Sales Account Manager / Optics
Sean Wilson
03110 Bedford, NH
Huyen Vu
Sales Director / Optics, Lasers
Huyen Vu
03110 Bedford, NH
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Laser Components

116 South River Road
Building C
Bedford, NH 03110

Phone: +1 603 821 7040

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