Foctek Photonics, Inc.

As Focusing in optics for more than ten years, FOCtek Photonics Inc designs and manufactures a wide range of Crystals Components.

  • Laser Crystals and Rods: Ti: Sapphire, Nd:YAG, Nd:GdVO4, Er:Phosphate Glass, Nd:Phosphate Glass
  • Nonlinear Crystals: BBO, KTP, LiNbO3
  • Birefringent Crystals: YVO4, a-BBO, Calcite
  • Passive Q-switch Cryst...
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Foctek Photonics, Inc.

  • extinction Ratio: >5000: 1
  • Wavefront Distortion: < λ/8 @633nm
  • Capacitance: according to different model
  • Single Pass Optical Transmission: >98%
  • Damage Threshold: >750MW/cm2 @1064nm, 10ns 10Hz
  • Spectral Range: 240nm~1400nm
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Foctek Photonics, Inc.

Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is the best material for medical application where the need for eye protection may be difficult to manage or diminish or hinder essential visual observation. Recently it is used in optical fiber communication instead of EDFA for its more super plus. Read more...

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Foctek Photonics, Inc.

Yttrium vanadate has been growing in popularity because of its high gain, low threshold, and high absorption coefficients at pumping wavelengths, which result from the excellent fit of the neodymium dopant in the crystal lattice. These advantages make Nd:YVO4 is a better choice than Nd:YAG for low-power devices such as hand-held pointers, and others compact lasers. Read more...

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Dayoptics, Inc.

Capabilities:

  • Diameter - Max. 25mm
  • Length - Max. 30mm
  • Surface Quality - Better than 2 0/10 Scratch / Dig Per MIL-0-13830A
  • Beam Deviation - <3 arc min
  • Optical Axis Orientation - +/-0.2°
  • Flatness - < l /8 @633nm
  • Transmission Wavefront Distortion - < l /8 @633nm
  • Coating - Upon Customer's S...
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Dayoptics, Inc.

Dayoptics can provide LBO with mass production and low cost. LBO crystals have excellent optical homogeneity, non-hygroscopicity and very high damage threshold assure long and stable operation of crystal. LBO crystal is the first choice as a harmonic generator of high peak power pulsed lasers. Read more...

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CASTECH, Inc.

The NLO crystal Lithium Niobate is made into a periodically inverted domain structure, called Periodically Poled Lithium Niobate (PPLN), to compensate for phase mismatch caused by dispersion. Read more...

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CASTECH, Inc.

The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good temperature stability and physical and mechanical properties. It is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications inc... Read more...

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CASTECH, Inc.

Nd:YAG is the earliest and most famous laser host crystal. Since it combines great advantages in many basic properties, Nd:YAG is the ubiquitous presence for near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multiplier. Read more...

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CASTECH, Inc.

Beta-Barium Borate (β-BaB2O4 or BBO), discovered and developed by FIRSM, CAS (Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences), now is manufactured and marketed by CASTECH Inc. The high-quality crystal boule is steadily available from CASTECH. Read more...

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