Abstract

A real-time, in situ fixing method by use of heating with a CO2 laser beam is suggested for thermal fixing of a small local hologram in the bulk of a Fe:LiNbO3 photorefractive crystal. For heating up to 100 °C–200 °C a volume with a shape similar to that of the laser beam a heat-guiding technique is developed. On the basis of the heat-transfer equations, different heating modes—with or without metal absorbers for heat guiding—obtained by use of a continuous or pulsed laser beam are analyzed. The optimal mode may be pulsed heating with absorbers. On this basis experiments have been designed and demonstrated. It is seen that the fixing process with CO2 laser beam is short compared with the process by use of an oven, and the fixing efficiency is quite high.

© 1998 Optical Society of America

Full Article  |  PDF Article
Related Articles
Electrical fixing of photorefractive holograms in Sr0.75Ba0.25Nb2O6

Yong Qiao, Ratnakar R. Neurgaonkar, Sergei Orlov, and Demetri Psaltis
Opt. Lett. 18(12) 1004-1006 (1993)

Selective page-addressable fixing of volume holograms in Sr0.75Ba0.25Nb2O6 crystals

Anthony Kewitsch, Ratnakar Neurgaonkar, Mordechai Segev, and Amnon Yariv
Opt. Lett. 18(15) 1262-1264 (1993)

Image and hologram fixing method with SrXBa1−XNb2O6 crystals

Moshe Horowitz, Alexander Bekker, and Baruch Fischer
Opt. Lett. 18(22) 1964-1966 (1993)

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 (14)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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 (9)

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