Optical retardation measurement using a Zeeman laser

Jing Fung Lin, Yu Lung Lo

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper presents a new optical configuration for measuring the phase retardation of optical linear birefringent materials. Phase retardation is measured by a heterodyne light source, which is generated by a Zeeman laser. The measurement system has advantages as a simple optical setup, high stability, small size, and portable owing to the configuration and the use of a Zeeman laser. Using the ratio of amplitudes from two measured heterodyne signals, a simple algorithm can obtain the phase retardation directly. Moreover, we can extend dynamic range of the phase retardation measurement to be 180° successfully. According to the experimental results, the average absolute error for the phase retardation of λ/4-wave plate sample is determined to be only 2.7%.

Original languageEnglish
Pages (from-to)191-194
Number of pages4
JournalKey Engineering Materials
Volume326-328 I
Publication statusPublished - 2006 Jan 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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