Measurement and control of subangstrom mirror displacement by acousto‐optical technique

Measurement and control of subangstrom mirror displacement by acousto‐optical technique

Control of laser mirror spacing and angular orientation is important for laser frequency and mode stability. A wave front sensor that employs acousto‐optic modulation and optical heterodyning has been applied in conjunction with a servo‐control loop to control mirror motion. The measurement and cont...

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Veröffentlicht in:Rev. Sci. Instrum.; (United States) 1982-07, Vol.53 (7), p.963-966
Hauptverfasser: Wang, C. P., Varwig, R. L., Ackman, P. J.
Format: Artikel
Sprache:eng
Schlagworte:
420300 - Engineering- Lasers- (-1989)
CONTROL
CONTROL EQUIPMENT
DATA
DESIGN
ENGINEERING
EXPERIMENTAL DATA
FEEDBACK
FREQUENCY CONTROL
INFORMATION
LASER CAVITIES
MIRRORS
MODULATION
MOTION
NUMERICAL DATA
ORIENTATION
SERVOMECHANISMS
STABILITY
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Beschreibung
Zusammenfassung:Control of laser mirror spacing and angular orientation is important for laser frequency and mode stability. A wave front sensor that employs acousto‐optic modulation and optical heterodyning has been applied in conjunction with a servo‐control loop to control mirror motion. The measurement and control of subangstrom mirror displacements are possible using this system. Experimental results are presented that indicate closed‐loop control of mirror displacement to within 0.06 nm.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1137116