Which mechanism limits sustained lasing in dye lasers using complex organic molecules?

💡 Explanation

When organic dye molecules are excited, intersystem crossing can populate the triplet state, a long-lived state that absorbs the lasing wavelength, causing triplet state population bottlenecking and preventing further stimulated emission. Therefore triplet state population causes lasing to cease, rather than solvent vibrational quenching, mirror damage, or thermal effects which have different material requirements.

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