Potassium titanyl phosphate

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Structural formula
Potassium ionPhosphate ionTitanylion
General
Surname Potassium titanyl phosphate
other names

KTP

Molecular formula KTiOPO 4
External identifiers / databases
CAS number 12690-20-9
PubChem 159454
ChemSpider 140221
Wikidata Q414260
properties
Molar mass 197.95 g mol −1
Physical state

firmly

density

3.0 g cm −3

safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Potassium titanyl phosphate (KTP) is an ionic compound made from potassium , titanium oxide and phosphate , the crystals of which have non-linear optical properties, which makes them interesting for optics in addition to a fairly wide transparency range from 350 nm to 4400 nm. It was first synthesized by L. Ouvard in 1890.

properties

Potassium titanyl phosphate is a colorless solid which has an orthorhombic crystal structure with the space group Pna 2 1 (space group no. 33) . It decomposes from a temperature of 1150 ° C. Template: room group / 33

Applications

KTP crystals can be used for electro-optical and non-linear optical applications. A frequent application is the frequency doubling of laser light by placing a KTP crystal inside the laser resonator . The best known example is the green DPSS - laser . Here light is first generated by means of an Nd: YVO 4 or Nd: YAG laser at a wavelength of 1064 nm, which is then converted into visible green radiation with a wavelength of 532 nm by doubling the frequency. These beam sources are also known as “KTP lasers”. In quantum optics , KTP also plays a role in generating correlated photon pairs through parametric fluorescence .

Lasers with potassium titanyl phosphate are also used in medicine for pigment treatment, for example.

Individual evidence

  1. ↑ Data sheet on potassium titanyl phosphate
  2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  3. ↑ a b c northropgrumman.com: Potassium Titanyl Phosphate - KTP 2011, accessed July 25, 2015
  4. ↑ Govindhan Dhanaraj, Kullaiah Byrappa, Vishwanath Prasad, Michael Dudley: Springer Handbook of Crystal Growth . Springer Science & Business Media, 2010, ISBN 978-3-540-74761-1 , p. 719 ( limited preview in Google Book search).
  5. ↑ Ulf Leonhardt: Essential Quantum Optics From Quantum Measurements to Black Holes . Cambridge University Press, 2010, ISBN 978-0-521-86978-2 , pp. 160 ( limited preview in Google Book Search).
  6. ↑ William D. James, Timothy Berger, Dirk Elston: Andrews' Diseases of the Skin Clinical Dermatology . Elsevier Health Sciences, 2015, ISBN 0-323-31969-6 , pp. 904 ( limited preview in Google Book search).