Abstract

The low-order (focus and astigmatism) aberrations induced in a thermally bloomed medium with transverse flow were measured. The maximum focus OPD for a 10-cm aperture was measured to be ~0.4 μm at an Irel ≅ 0.5. The maximum astigmatism OPD was measured to be ~1.4 μm at an Irel ≅ 0.4. The low-order aberrations were dominant at Irel ≥ 0.4. For Irel ⪝ 0.4, higher-order terms become more important. Using the measured values of focus and astigmatism as inputs, a loop was closed around a deformable mirror to correct for the measured aberrations. The presence of an iterative condition in which correction for thermal blooming leads to a more severe condition of blooming, and so on, was observed. However the loop converged to a stable condition. The maximum increase in peak intensity on target achieved by closing the loops was 30–40%.

© 1984 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Target loop adaptive optics: thermal blooming correction

Prasad R. Akkapeddi, E. T. Siebert, J. Baker, G. T. Volpe, and H. J. Robertson
Appl. Opt. 20(4) 564-572 (1981)

Frequency response of a thermally driven atmosphere

Julian S. Nichols and Dennis C. Duneman
Appl. Opt. 21(3) 421-427 (1982)

Edge scan wave-front analyzer for low order aberrations

Julian S. Nichols and Dennis C. Duneman
Appl. Opt. 22(18) 2836-2843 (1983)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription