ISSN:
1572-9559
Keywords:
D2O
;
Submillimeter laser
;
Far infrared Laser
;
Plasma Diagnostics
;
Pulsed
;
Thomson scattering
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A narrow line optically pumped D2O laser operating at 385 μm has delivered more than 5J in pulses longer than 3 μsec using a large aperture unstable resonator cavity design. Pulse levels 〉1J, 1 μsec are necessary for a single shot ion temperature measurement by Thomson scattering in large tokamaks. Experiments have, for the most part, been conducted at a 360J, 5 μsec CO2 laser pump level where high efficiency (∼ 2.5 J at 385 μm) has been obtained. These are the highest energies reported to date in the far infrared. In addition, the pulse length has been extended beyond the vibrational relaxation time.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01008604
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