Change search
ReferencesLink to record
Permanent link

Direct link
Characterization of domain gratings in KTP and RKTP crystals for second harmonic generation.
KTH, School of Engineering Sciences (SCI).
KTH, School of Engineering Sciences (SCI).
2012 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Lasers are used in a vast range of applications ranging from eye surgery to devices formeasuring air pollution. Most of these applications require specific wavelengths that cannot be obtained by regular lasers. Therefore it is important to be able to convert the wavelength of the laser to the desired wavelength for a specific application. This is achieved by using nonlinear optical crystals in which an incoming light frequency can be converted into another.

Due to the material’s chromatic dispersion there is a phase mismatch between the incoming and generated light, which prevents a net increase of the generated light’s power. A solution to this problem is the creation of domain gratings in ferroelectric crystals, which compensates for the phase mismatch between the interacting photons. However, the conversion efficiency will depend on the quality of the grating.

In this study, we have characterized KTiOPO4 and Rb‐doped KTiOPO4 ferroelectric crystals in terms of their efficiency to convert infrared light to blue light. This conversion efficiency has been correlated to the domain structure and the quality of the grating. We have found that the homogeneity of the grating and the existence of damage on the crystal’s optical surfaces have a strong impact on the conversion efficiency.

Place, publisher, year, edition, pages
2012. , 24 p.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-104028OAI: diva2:562660
Available from: 2012-11-12 Created: 2012-10-25 Last updated: 2014-10-16Bibliographically approved

Open Access in DiVA

Anna Hamberg & Sandrine Idlas kandidatexam(791 kB)146 downloads
File information
File name FULLTEXT01.pdfFile size 791 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
School of Engineering Sciences (SCI)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 146 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 118 hits
ReferencesLink to record
Permanent link

Direct link