E.A. Savel\'ev - Post-graduate Student, Kotelnikov IRE RAS (Moscow). Е-mail: swoopermsu@pochta.ru K.M. Golant - Dr.Sc. (Phys.-Math.), Professor, Leading Research Scientist, Kotelnikov IRE RAS (Moscow)

The loss spectra of slab lightguides with Yb-activated P-doped silica cores are studied in the 320-1050 nm wavelength range. Two or three layer lightguiding structures were synthesized by surface-plasma chemical vapor deposition (SPCVD). The fusing of the synthesized SPCVD amorphous silicon dioxide with phosphorous leads to an increase in the size of clusters constituting YbPO₄, which is responsible for the significant increase of the scattering loss of the lightguides.

 

1. Fomin V., Abramov M., Ferin A., Abramov A., Mochalov D., Platonov N., Gapontsev V. 10 kW single-mode fiber laser // 5th International Symposium on High-Power Fiber Lasers and Their Applications. St. Petersburg. June 28-July 1. 2010.
2. Golant K.M. Surface plasma chemical vapor deposition: 20 years of application in glass synthesis for lightguides // XXI International Congress on Glass. Strasbourg. 2007.
3. Kholodkov A.V., Golant K.M. Er³⁺ Ion Photoluminescence in Silicate Glasses Obtained by Plasma-Chemical Deposition in a Low-Pressure Microwave Discharge // Technical Physics. 2005. 50(6). P. 719-726.
4. Kholodkov A.V., Golant K.M., Iskhakova L.D.Peculiarities of Er³⁺ Photoluminescence in Halogen-Doped Amorphous Silica // Phys. Wave Phen. 2009. 17(3). P. 155-164.
5. Xu Z., Ma P., Li C., Hou Z., Zhai X., Huang S., Lin J. Monodisperse coreeshell structured up-conversion Yb(OH)CO₃@YbPO₄:Er³⁺hollow spheres as drug carriers // Biomaterials. 2011. № 32. P. 4161-4173.