Waveguide-based single-pixel up-conversion infrared spectrometer.
A periodically poled lithium niobate (PPLN) waveguide-based single-pixel up-conversion infrared spectrometer was demonstrated. Sum-frequency generation between a 1.5-microm-band scanning pump laser and a 1.3-microm-band signal generated visible radiation which was detected by a silicon single-photon detector. The up-conversion spectrometer's sensitivity was two-orders-of-magnitude higher than that of a commercial optical spectrum analyzer.
Zhang
Qiang
Q
Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. qiangzh@stanford.edu
Langrock
Carsten
C
Fejer
M M
MM
Yamamoto
Yoshihisa
Y