Page 385 - Tunable Lasers Handbook

7 Opticat Parametric Oscillators 345

f ilvv+O Ak=o

I ; 1
I -Increasing Signal Frequency-
I
I I
I
1
I
I
I
I
I
-increasing Idler Frequency-
FIGURE 23 Cluster effects in doublJ resonant devices.

closest set of frequencies that satisfies both the resonance condition and the con-
servation of energy can vary on a shot-to-shot basis. For example, the pump fre-
quency may experience small variations caused by small variations in the level of
excitation oE the pump laser. A small variation in the pump frequency may cause a
much larger difference in the frequencies that satisfy both the conservation of
energy and the resonance condition. Due to instabilities associated with the cluster
effect, the doubly resonant optical parametric oscillator is often avoided.

REFERENCES

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