Laser Line Mirrors for Precise Beam Steering

PP-UVFS-25.4-6.35-MW97 Deep UV Laser Mirror

PP-UVFS-25.4-6.35-MW97 Deep UV Laser Mirror

$283.00
Sold by: Optoman Ships from: Lithuania
Specifications
Substrate Material: UV Fused Silica
Diameter: 25.4 mm
Thickness: 6.35 mm
Wavelength Range: 193 – 193 nm
Angle Of Incidence (AOI): 45 – 45 deg

Did You Know?

Did you know that many laser line mirrors achieve reflectivities >99.8% at a single design wavelength but may drop below 95% just a few nanometers off-band, due to the steep spectral response of their dielectric stack? This is a consequence of constructive interference in multilayer Bragg reflectors, where the optical thickness of each layer is tuned to roughly λ/4 at the target laser line. A common misconception is that a 532 nm laser line mirror will work equally well at 515–520 nm frequency-doubled sources, yet the angle of incidence and polarization can shift the effective wavelength enough to significantly degrade damage threshold and reflectivity.
Read more in our Blog

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Frequently Asked Questions

A laser line mirror is an optical mirror whose dielectric coating is optimized for very high reflectance at one specific laser wavelength (or a very narrow spectral band), typically with >99% reflectivity at that line. In contrast, a broadband dielectric mirror is designed to provide moderately high reflectance over a wider wavelength range, which usually sacrifices peak reflectivity and damage threshold compared to a dedicated laser line design.

Overview of Laser Line Mirrors

Laser Line Mirrors are reflective optics optimized for high reflectance at a specific laser wavelength or a narrow spectral band. Unlike broadband mirrors, these components use dielectric or metallic coatings engineered to maximize performance at one or more discrete laser lines, such as 266 nm, 355 nm, 532 nm, 632.8 nm, 808 nm, 1064 nm, or 1550 nm. They are used to steer, fold, and redirect beams in laser cavities, beam delivery systems, and measurement setups.

Typical Specifications and Performance Parameters

On FindLight, Laser Line Mirrors are available across a wide range of optical and mechanical specifications. Common parameters include:

  • Design wavelength / laser line: Single line or multi-line (e.g., 532/1064 nm) operation.
  • Reflectance: Up to >99.8% for dielectric Laser Line Mirrors at the design AOI; lower but broadband for metal-coated options.
  • Angle of incidence (AOI): Normal incidence (0°), 45°, or custom AOIs; polarization-sensitive designs for s- or p-polarized beams.
  • Damage threshold: Specified in J/cm² or W/cm² for nanosecond, picosecond, or CW operation; critical for high-power lasers.
  • Surface quality and flatness: Typical 10-5 or 20-10 scratch-dig and λ/10 to λ/2 flatness for precision beam quality.
  • Substrates: Fused silica, BK7, Zerodur, silicon and other materials selected for thermal stability and wavelength range.
  • Clear aperture and diameter: From a few millimeters up to several inches for lab benches or industrial beam lines.

Use Cases and Application Domains

Laser Line Mirrors are used in resonator optics, beam expanders, scanner systems, laser machining heads, medical lasers, LIDAR transmitters, and scientific instrumentation. Their narrowband optimization enables precise control of reflectance and phase for the target laser line while managing thermal load and maintaining wavefront quality.

Buyer Guidance on FindLight

When selecting Laser Line Mirrors, compare design wavelength, AOI, polarization behavior, damage threshold, and surface specifications against your system requirements. Verify substrate material compatibility with your operating environment and spectral region. On FindLight you can browse approximately 43 active Laser Line Mirrors from different manufacturers, review detailed datasheets, and match specifications to your laser source and power level. Once suitable candidates are identified, request quotes or technical clarifications directly from vendors; no registration is required to initiate inquiries.