Generation of short high peak power pulses from an injection mod

Details Generation of short high peak power pulses from an injection mod Generation of short high peak power pulses from an injection mod

1988-04-22

1990-04-03

Sikes, William L.

Coherent light generators

Particular beam control device

Mode locking

10 97, H01S 3098

Patent

active

049146637

ABSTRACT:
In a laser generator for generating short high peak power pulses of lasant radiation, a mode-locked laser oscillator generator generates a train of short pulses to be amplified. The pulses to be amplified, as of 10 ps pulse width, are temporally spaced by the optical resonator round-trip time, i.e., six ns for a three meter long optical resonator. The pulses to be amplified are then injected into a moving slab Q-switched laser oscillator for seeding thereof and amplification therein. The temporal spacing of the injected pulses is matched to the round-trip time of the optical resonator of the moving slab laser oscillator for mode-locking the moving slab oscillator to efficiently achieve 100 dB of gain in the amplified pulses. The resultant amplified pulses have a peak power as of 500 MW. By chirping and broadening of the pulses to 300 ps before amplification, followed by pulse width compression in a grating pair, pecosecond pulses are generated of 150 GW peak power.

REFERENCES:
patent: 4375684 (1983-03-01), Everett
patent: 4737958 (1988-04-01), Sizer, II
patent: 4791633 (1988-12-01), Esherick et al.
Bernard et al., "Injection Tuning and Mode Locking of a TEA-CO.sub.2 Laser on Low Gain Rotational Lines," Optics Communications, vol. 34, No. 1, pp. 101-102.
Taylor et al., "Mode-Locking Characteristics of a Neodymium-Glass Laser Using the Polymethine Dye No. 3955 in a Solid Host," Appl. Phys. Lett., vol. 31, No. 11, Dec. 77, pp. 732-735.
Carlus et al., "Reliable Passive Mode Locking with Slow Q-Switching", Appl. Phys. Letts, vol. 37, No. 8, Oct. 15, 1980, pp. 684-685.

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