Abstract

We propose a new way for temperature measurement in the core of active optical fiber under high-power laser generation. The technique is based on quadrature fiber Michelson interferometer assisted with lock-in amplification for separated amplitude and phase modulations of the probe light, which allows to perform measurements in arbitrary heat transfer conditions. The technique is demonstrated on the Yb-doped fiber laser. The pump power up to 25 W under natural convection was applied. The value of convective heat transfer coefficient and its dependence on temperature difference between fiber and environment are determined from these measurements.

© 2016 IEEE

PDF Article

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