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January 1, 1998 / Vol. 23, No. 1 / OPTICS LETTERS 61 Femtosecond optical parametric oscillator based
 

Summary: January 1, 1998 / Vol. 23, No. 1 / OPTICS LETTERS 61
Femtosecond optical parametric oscillator based
on periodically poled KTiOPO4
Tolga Kartaloglu, Kahraman G. K¨opr¨ul¨u, and Orhan Ayt ¨ur
Department of Electrical and Electronics Engineering, Bilkent University, TR-06533 Bilkent, Ankara, Turkey
Michael Sundheimer
Department of Physics, Ko¸c University, TR-80860 Istanbul, Turkey
William P. Risk
IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120
Received July 7, 1997
We report a femtosecond optical parametric oscillator based on a periodically poled KTiOPO4 crystal for which
quasi-phase matching is achieved with a 24-mm poling period. The singly resonant parametric oscillator,
synchronously pumped by a Ti:sapphire laser at a wavelength of 758 nm, generates a signal at 1200 nm and an
idler at 2060 nm. The maximum signal power conversion efficiency of the device is 22% with a pump depletion
of 69%. We tune the signal wavelength over a 200-nm band by changing the cavity length. In addition, pump
wavelength tuning provides output tunability in the 1000­1235-nm range. © 1998 Optical Society of America
OCIS codes: 190.0190, 190.2620, 190.4970.
Frequency conversion using optical parametric oscil-
lators (OPO's) is a widely used technique for extend-
ing the wavelength range of laser systems. Several

  

Source: Aytur, Orhan - Department of Electrical Engineering, Bilkent University
Köprülü, Kahraman Güçlü - Department of Electrical and Electronics Engineering, TOBB Economics and Technology University

 

Collections: Engineering