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External cavity wideband tunable laser with dual laser gain media coupled by a thin film filter including
External cavity wideband tunable laser with dual laser gain media coupled by a thin film filter including
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机译:外腔宽带可调谐激光器,其双激光增益介质通过薄膜滤波器耦合,包括
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摘要
The invention relates to an external cavity wideband tunable laser with dual laser gain media coupled by a thin film filter. The laser comprises: a first laser gain medium, a first laser cavity end mirror arranged on the first laser gain medium, a first intracavity collimating lens, an active optical phase modulator, a tunable acousto-optic filter, an intracavity reflection mirror, an etalon and a total reflection mirror, which are all arranged sequentially inside the laser cavity. The laser further comprises a second laser gain medium, a second laser cavity end mirror arranged on the second laser gain medium, a second intracavity collimating lens, a thin film optical filter for coupling the output light beams emitted from the first laser gain medium and the second laser gain medium, a radio frequency signal source, pumping sources for the two laser gain media, an active optical phase modulator drive source and a laser drive control circuit. The invention expands the output spectrum range of a single tunable laser and is capable of covering C and L spectrum bands. The laser has reliable performance with stable output and compact size, low cost for volume production and easy installation.
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