Selecting optimal incident conditions in a cat-type self-pumped phase conjugator by erasure

Ching Cherng Sun, Ren Han Tsou, Ming Wen Chang, Ken Yuh Hsu

Research output: Contribution to journalConference articlepeer-review


We have observed an extra fanning beam along the direction for obtaining the maximum coupling strength and it affects the reflectivity of a cat self-pumped phase conjugator. The production of the extra fanning beam for obtaining the highest coupling strength can be understood by applying Sun's method. The angle deviation of the direction of the extra fanning beam and the fanning loops affects the generation and reflectivity of the phase conjugate wave. It can be controlled by erasure. Moreover, the erasure of the crystal can be treated as another control factor of incident condition for obtaining the maximum reflectivity in a Cat SPPCM in Sun's method. We have modified Sun's method by considering this factor. We find the modified Sun's method can be used to estimate the optimal incident conditions for obtaining the relatively high reflectivity of a Cat SPPCM in a more accurate way.

Original languageEnglish
Pages (from-to)18-28
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 18 Aug 1995
EventPhotorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 - San Diego, United States
Duration: 9 Jul 199514 Jul 1995


  • Beam fuming
  • Coupling strength
  • Erasure
  • Self-pumped phase conjugate mirror


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