THE QUALITY MODULATOR OF AN OPTICAL QUANTUM GENERATOR ON A RUBY (MODULYATOR DOBROTNOSTI OPTICHESKOGO KVANTOVOGO GENERATORA NA RUBINE),
Abstract
A Q factor modulator that increases the output pulse power of a ruby laser by 1000 is described. The modulator is made up of an optical head and an electronic unit. The optical head consists of a rotating prism with total internal reflection that acts as one of the mirrors of the laser optical resonator; it is driven at angular speeds up to 26,000 rpm by a dc motor. The Electronic unit consists of a square wave generator, a comparator circuit, two time delay networks, a trigger circuit, a dc motor, and a power supply. The modulator operates in the following manner: at a given angular position of the prism with respect to the laser beam, light from a lamp is focused through a lens and illuminates a photosensitive diode. The output pulse of the photodiode is amplified and fed to the comparator. When the rotational speeds of the motor and the prism are equal, the comparator initiates a pulse that lights the laser pumping lamp and thus triggers the laser. At the same time, the motor is stopped and the laser is not triggered again until the motor builds up its speed until it is equal to that of the prism. The motor has an automatic disconnect relay which stops it in 5 to 7 seconds if a faulty condition occurs in the circuit. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 19, 1967
- Accession Number
- AD0673922
Entities
People
- A. S. Karpenko
- A. V. Kozin
- E. N. Kabanov
- V. I. Kravchenko
- Yu. V. Baiborodin
Organizations
- National Air and Space Intelligence Center