Eminently useful. Source: https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-974-fundamentals-of-photonics-quantum-electronics-spring-2006/lecture-notes/chapter7.pdf
Laser Dye technology by Peter Hammond
- This paper is another great resource!
- Lists the stimulated emission cross-section for Rhodamine-6G as 4e-16 @ 550nm, consistent with the table above.
- At a (high) concentration of 2mMol (1 g/l), 1/e penetration depth is 20um.
- Depending on the solvent, there may be aggregation and stacking / quenching.
- Tumbling time of Rhodamine 6G in ethanol is 20 to 300ps; fluorescence lifetime in oscillators is 10's of ps, so there is definitely polarization sensitive amplification.
- Generally in dye lasers, the emission cross-section must be higher than the excited state absorption, most important.
- Bacteria can actually subsist on rhodamine-similar sulfonated dyes in aqueous solutions! Wow.
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