Comparison of control methods in a frequency stabilized laser. Master's thesis

Technical Report · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6874609

Luzitano, R D

The purpose of this research is to compare two types of control methods that can be used to frequency stabilize a laser. The first method uses a single piezoelectric transducer (PZT) to control the cavity length of a helium-neon laser. The second method employs dual PZT controllers of different lengths so that a fast response time can be achieved with the benefit of a large dynamic range. Two variations of the first method are compared to the second method. The first variation uses an integrator with gain as a compensator in electronic feedback control loop and is designed using steady state analysis. The second variation uses a more sophisticated compensator that is designed using frequency analysis. Frequency analysis is also used in the compensator design for the second method. Each compensator is tested in a laser control loop and the results of each method are compared.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (USA). School of Engineering
• OSTI ID: 6874609
• Report Number(s): AD-A-085707
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CONTROL
DIMENSIONS
FEEDBACK
FREQUENCY CONTROL
FUNCTIONS
GAS LASERS
HELIUM-NEON LASERS
LASER CAVITIES
LASERS
LENGTH
TRANSDUCERS
TRANSFER FUNCTIONS