GLACIER–123

GLACIER®–123

1064 nm Harmonics Reflectometer and Loss Meter

GLACIER–123

GLACIER®-123 is the latest addition to UFI's® GLACIER® family. Designed as a multiwavelength system, it is the first of its kind to measure at 355 nm. It includes a microchip laser that emits 1064, 532 and
355 nm radiation, making it particularly interesting for those in need of these harmonic wavelengths.
Our reflectometers use the extreme sensitivity of cavity ringdown spectroscopy to quantify the losses of advanced optical coatings down to 5 ppm. As a typical application, the device can characterize supra-mirrors with up to 99.9995% reflectivity. Conventional absorption and reflection measurements are not sufficiently sensitive to quantify today's super-reflective mirror coatings and are typically limited to the >1000 ppm range (corresponding to <99.9% reflectivity). Cavity ring-down spectroscopy measures optical losses by the decay of the energy stored inside a cavity.
The technique reaches unrivalled sensitivity because the losses are experienced over and over again after every round trip inside the cavity. Lower losses lead to longer intra-cavity dwell time thereby automatically increasing the measurement precision. The device features high-speed data acquisition and allows to record measurements within seconds. It is delivered complete with a computer and a user-friendly software interface for acquisition and real-time analysis.

Key Product Features

  • Reflectivity measurements
    • Reflectivities up to 99.9995%
    • Various angles of incidence: 5° - 45° (and 0°)
    • s and p polarization (separately)
  • Antireflective coating characterization: Reflectivity down to 0.0005% (5 ppm)
  • Simple and reproducible alignment for 0.5", 1" and 2" optics
  • Spring-loaded mirror fixtures for reproducible mounting without strain
  • Computer and user-friendly software interface included
  • High-speed data acquisition and real-time analysis
  • Operating wavelengths: 355, 532 and 1064 nm (possible to add a 4th diode-laser-based wavelength)
  • Standard Footprint: 90 x 55 cm2

A family of GLACIERs to choose from. Pick the one that suits your needs best:

 GLACIERGLACIER-123GLACIER-C
Number of wavelengthsOneThreeThree*
Maximum number of wavelengthsThreeFourUnlimited!
Possible to add more wavelengths at a later pointYes**Yes**Yes
Wavelength range375 — 1550 nm
(diode laser based)
355, 532 and 1064 nm
4th wavelength:
diode laser based
(375 — 1550 nm)
450 — 2000 nm
(freely selected)
Laser sourceDiode laserMicrochip laserSupercontinuum with monochromator
Footprint90 x 45 cm2
90 x 55 cm2 for more
than 1 wavelength
90 x 55 cm290 x 55 cm2
Reflectivity measurementsReflectivities up to 99.9995%
Antireflective coating characterizationReflectivity down to 0.0005% (5 ppm)
Angle of incidence5° - 45° and 0°
Polarizations and p (separately)
Optics size0.5", 1"
(2” and more upon request)
SoftwareComputer and user-friendly software interface included

*Included in the basic version, more can be added.

**Factory upgrade required. For GLACIER, a bigger footprint should be considered in advance (90 x 55 cm2).

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