Broadband frequency conversion

Publication: Research - peer-reviewPoster – Annual report year: 2012

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We present a simple, passive and static setup for broadband frequency conversion.
By using simple optical components like lenses, mirrors and gratings, we obtain the spectral angular dispersion to match the second harmonic generation phasematching angles in a nonlinear BiBO crystal.
We are able to frequency double a single-frequency diode laser, tunable in the 1020-1090 nm range, with almost equal efficiency for all wavelengths.
In the experimental setup, the width of the phasematch was increased with a factor of 50.
The method can easily be extended to other wavelength ranges and nonlinear crystals.
Broadband phasematching has a number of applications:
Nonlinear conversion of a swept source for optical coherence tomography.
Inclusion in an autocorrelator, enabling it to use longer crystals and shorter pulses, thereby improving the SNR.
Converting some of the spectrum from a supercontinuum source, to extend its spectral range.
Original languageEnglish
Publication date2012
Number of pages1
StatePublished

Conference

ConferenceNorthern Optics 2012
CountryDenmark
CitySnekkersten
Period19/11/1221/11/12
Internet addresshttp://indico.conferences.dtu.dk/conferenceDisplay.py?ovw=True&confId=118

Bibliographical note

Presenter: Nicolai Sanders. Best poster award.

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