Long, Craig SLoveday, Philip WForbes, A2008-07-042008-07-042008-03Long, CS, Loveday, PW and Forbes, A. 2008. Piezoelectric deformable mirror for intra-cavity laser adaptive optics. Industrial and Commercial Applications of Smart Structures Technologies 2008, San Diego, California, USA, 9-13 March 2008, pp 12.9780819471161http://hdl.handle.net/10204/2292https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6930/69300Y/A-piezoelectric-deformable-mirror-for-intra-cavity-laser-adaptive-optics/10.1117/12.776178.fullhttps://doi.org/10.1117/12.776178Copyright: 2008 The International Society for Optical Engineering.This paper describes the development of a deformable mirror to be used in conjunction with diffractive optical elements inside a laser cavity. A prototype piezoelectric unimorph adaptive mirror was developed to correct for time dependent phase aberrations to the laser beam, such as those caused by thermal expansion of materials. The unimorph consists of a piezoelectric disc bonded to the back surface of a copper reflective mirror. The rear electrode of the piezoelectric ceramic disc is divided into segments so that a number of different control voltages can be applied to deform the mirror in a desired displacement distribution. The mirror is required to be able to deform in the shape of each of the lower order Zernike polynomials, which describe aberrations in optical systems. A numerical model of the device was used to determine a suitable electrode configuration. Finally, the device was constructed and the deformed shapes measured using a laser vibrometer.enDeformable mirrorAdaptive opticsLaser beam controlPiezoelectric unimorphArticleLong, C. S., Loveday, P. W., & Forbes, A. (2008). Piezoelectric deformable mirror for intra-cavity laser adaptive optics. http://hdl.handle.net/10204/2292Long, Craig S, Philip W Loveday, and A Forbes "Piezoelectric deformable mirror for intra-cavity laser adaptive optics." (2008) http://hdl.handle.net/10204/2292Long CS, Loveday PW, Forbes A. Piezoelectric deformable mirror for intra-cavity laser adaptive optics. 2008; http://hdl.handle.net/10204/2292.TY - Article AU - Long, Craig S AU - Loveday, Philip W AU - Forbes, A AB - This paper describes the development of a deformable mirror to be used in conjunction with diffractive optical elements inside a laser cavity. A prototype piezoelectric unimorph adaptive mirror was developed to correct for time dependent phase aberrations to the laser beam, such as those caused by thermal expansion of materials. The unimorph consists of a piezoelectric disc bonded to the back surface of a copper reflective mirror. The rear electrode of the piezoelectric ceramic disc is divided into segments so that a number of different control voltages can be applied to deform the mirror in a desired displacement distribution. The mirror is required to be able to deform in the shape of each of the lower order Zernike polynomials, which describe aberrations in optical systems. A numerical model of the device was used to determine a suitable electrode configuration. Finally, the device was constructed and the deformed shapes measured using a laser vibrometer. DA - 2008-03 DB - ResearchSpace DP - CSIR KW - Deformable mirror KW - Adaptive optics KW - Laser beam control KW - Piezoelectric unimorph LK - https://researchspace.csir.co.za PY - 2008 SM - 9780819471161 T1 - Piezoelectric deformable mirror for intra-cavity laser adaptive optics TI - Piezoelectric deformable mirror for intra-cavity laser adaptive optics UR - http://hdl.handle.net/10204/2292 ER -