Active/passive mode-locked laser oscillator
A Q-switched/mode-locked Nd : YAG laser oscillator employing simultaneous active (electro-optic) and passive (saturable absorber) loss modulation within the optical cavity is described. This ''dual modulation'' oscillator can produce transform-limited pulses of duration ranging from about 30 psec to about 5 nsec with greatly improved stability compared to other mode-locked systems. The pulses produced by this system lack intrapulse frequency or amplitude modulation, and hence are ideally suited for amplification to high energies and for other applications where well-defined pulses are required. Also, the pulses of this system have excellent interpulse characteristics, wherein the optical noise between the individual pulses of the pulse train has a power level well below the power of the peak pulse of the train.
- Assignee:
- Energy Research and Development Administration
- Patent Number(s):
- US 4019156
- OSTI ID:
- 7077928
- Country of Publication:
- United States
- Language:
- English
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