Overview:

Dielectric coated mirrors are high-performance optical mirrors designed for applications requiring high reflectivity over specific wavelength ranges. These mirrors employ multiple dielectric layers to achieve precise reflection characteristics while minimizing losses. Dielectric coatings are known for their superior durability and stability compared to metallic coatings.

Key Features:

• High Reflectivity:

  • R > 99.8% at 1064 nm, AOI = 0°:
    This dielectric mirror offers exceptional reflectivity at 1064 nm (a common wavelength for Nd

    lasers) when the angle of incidence (AOI) is 0°. This high reflectivity ensures efficient laser beam control with minimal energy loss, making it ideal for laser applications.

  • Ravg > 99% from 400 nm to 700 nm, AOI = 45°:
    The mirror maintains an average reflectivity of over 99% across the visible spectrum (400 nm to 700 nm) at a 45° angle of incidence. This broad spectral performance is critical for applications requiring high reflection across multiple wavelengths, such as in optical systems that deal with both visible light and laser wavelengths.

• Durable Coating:
  Dielectric coatings are known for their long-lasting performance and resistance to environmental factors such as humidity and temperature fluctuations. This makes the mirrors suitable for both laboratory and industrial environments, where long-term stability is crucial.

• Low Absorption:
  Dielectric mirrors exhibit extremely low absorption, making them ideal for high-power laser systems where thermal effects can degrade performance over time.

Specifications:

• Reflectivity:

  • R > 99.8% at 1064 nm (Nd
     
    laser wavelength), AOI = 0°
  • Ravg > 99% across 400 – 700 nm, AOI = 45°

• Angle of Incidence (AOI):

  • 0° for 1064 nm
  • 45° for 400 – 700 nm

• Coating Type:
  Multi-layer dielectric coating for optimal reflectivity and durability.

• Substrate Material:
  The mirrors are typically mounted on substrates like fused silica or BK7, providing high mechanical strength and low thermal expansion.

• Surface Quality:
  40-20 scratch-dig (typical) for high optical clarity and minimal surface imperfections.

• Flatness:
  λ/10 at 632.8 nm for precision applications requiring high optical accuracy.

Applications:

• Laser Systems:
  These dielectric mirrors are ideal for Nd

  laser systems operating at 1064 nm, where high reflectivity at 0° AOI is essential to minimize power loss and enhance system efficiency.

• Optical Instruments:
  The broad reflectivity from 400 nm to 700 nm at 45° AOI makes the mirrors suitable for multi-wavelength optical systems, including telescopes, microscopes, and spectrometers.

• Beam Steering and Laser Path Control:
  The high reflectivity ensures that these mirrors are effective for steering and controlling laser beams in precision optical setups.

• Scientific and Industrial Uses:
  These mirrors are used in scientific research, laser manufacturing, and industrial applications where high reflectivity, durability, and thermal stability are required.

Customization:

• Special Coatings:
  Custom dielectric coatings can be applied for specific wavelength ranges or angles of incidence, allowing for tailored solutions based on application needs.

• Size and Shape:
  Mirrors can be manufactured in various sizes and shapes to fit specific system requirements, ensuring compatibility with a range of optical setups.