Second-harmonic generation in an optical fibre by self-written χ(2) grating
A mechanism for phase-matched generation or second-harmonic (SH) light in an optical fibre has been experimentally and theoretically studied. A weak non-phase-matched SH signal, created via the quadrupole polarisation, initiates the self-writing of an axially periodic pattern of colour centres which...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
1987.
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| Subjects: | |
| Online Access: | Get fulltext |
| Summary: | A mechanism for phase-matched generation or second-harmonic (SH) light in an optical fibre has been experimentally and theoretically studied. A weak non-phase-matched SH signal, created via the quadrupole polarisation, initiates the self-writing of an axially periodic pattern of colour centres which is postulated to lead to the growth of a χ(2) grating. The grating (at the phase-match period) gives rise to SH generation at efficiencies of 0.5%. The spectral bandwidth of this χ(2) grating is 0.24nm. |
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