Optimum operation of femtosecond parametric oscillation of a noncollinear phase match in KTP

Wei Quan Zhang

doi:10.1364/AO.44.002431

Applied Optics
Vol. 44,
Issue 12,
pp. 2431-2437
(2005)
•https://doi.org/10.1364/AO.44.002431

Optimum operation of femtosecond parametric oscillation of a noncollinear phase match in KTP

Wei Quan Zhang

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Wei Quan Zhang, "Optimum operation of femtosecond parametric oscillation of a noncollinear phase match in KTP," Appl. Opt. 44, 2431-2437 (2005)

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Abstract

For group-velocity (GV) matching, tunable femtosecond parametric oscillation must use noncollinear phase matching (PM). The tuning curves of femtosecond parametric oscillation are described; tuning can be continuous from the visible to the mid infrared. We demonstrate that GV matching and PM can be satisfied in type II PM for KTP. The effective nonlinear coefficient, the walk-off angles, the acceptance angles (a and θ_s), the acceptance spectral width, and the duration of the output idler pulse are calculated. Consequently, optimum femtosecond parametric oscillation of noncollinear phase matching is obtained in KTP.

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Property PM type	λ_p (nm)

	395		527		600

	FFS	FSF	FFS	FSF	FFS	FSF
Tuning range, λ_s(λ_i) µm	0.53 (1.55)–2.9 (0.457)	0.59 (1.2)–1.59 (0.525)	0.7 (2.13)–2.9 (0.644)	1.1 (1.01)–2.8 (0.649)	0.74 (3.17) –2.9 (0.757)	0.9 (1.8) –2.9 (0.757)
d_eff (pm/V)	2.33–4.83	3.38–6.87	2.63–4.57	3.15–6.6	2.57 –5.00	3.88 –6.78
Walk-off angle (deg)	0.2–5.47	4.13–12.8	1.6–6	4–10.8	1.07 –4.3	2.12 –10.1
ΔαL (rad-µm)	4–20.7	10–34	0.2–25.7	18–53.3	0.13 –58.7	0 –46.7
Δθ_sL(rad-µm)	0.36–15.2	2–3.6	0.27–15.2	4.93–16.3	0.27 –14.4	0.53 –21.3
Δλ_pL (nm-nm)	0.085–0.09	0.084–0.09	0.153–0.157	0.147–0.157	0.098 – 0.203	0.196 –0.206
Duration of idler wave (fs)	46.1–80	58.3–78.3	45.1–68.3	47.2–72	47.4–68.3	44.4–57.7

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Applied Optics