Biomedical subjects

Jonathan R Kurz

Publications and source records attributed to Jonathan R Kurz.

2 recordsLinked to original sources

PubMed2004

Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths.

We present a device to facilitate single-photon detection at communication wavelengths based on continuous-wave sum-frequency generation with an upconversion efficiency exceeding 90%. Sum-frequency generation in a periodically poled lithium niobate waveguide is used to upconvert signal photons to the near infrared, where detection can be performed efficiently by use of silicon avalanche photodiodes.

Journal Article↗

PubMed2004

Mode multiplexing in optical frequency mixers.

Asymmetric Y junctions allow the development of a new class of optical frequency mixers that utilize higher-order waveguide modes for signal processing. We measure high-contrast (>30 dB) mode sorting in asymmetric Y junctions by use of a novel technique: efficient TM00, TM10, and TM20 mode mixing in a periodically poled lithium niobate waveguide. We also demonstrate an odd-to-even mode wavelength converter capable of spectral inversion without offset or bidirectional wavelength conversion.

Journal Article↗