Title :
Focusing effects on blue generation by frequency doubling of femtosecond pulses in KNbO/sub 3/
Author :
Sungkyu Yu ; Weiner, A.M.
Author_Institution :
Sch. of Electr. Eng. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
We show that the nonlinear or blue-induced IR absorption in KNbO/sub 3/ leads to a significant temperature rise in the femtosecond experiments, which must be accounted for in setting the phase-matching conditions. We investigate, for the first time to our knowledge, the focusing dependence of the phase-matching temperature. We find that the optimum phase-matching temperature significantly depends not only on the input power but also on the focusing.
Keywords :
optical focusing; optical harmonic generation; optical materials; optical phase matching; optical pulse generation; potassium compounds; KNbO/sub 3/; blue generation; blue-induced IR absorption; femtosecond experiments; femtosecond pulses; focusing; focusing effects; frequency doubling; input power; optimum phase-matching; phase-matching conditions; phase-matching temperature; temperature rise; Electromagnetic wave absorption; Frequency conversion; Optical computing; Optical frequency conversion; Optical harmonic generation; Optical pulse generation; Optical pulses; Pulse generation; Temperature dependence; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.817757
