m8ta
use https for features.
text: sort by
tags: modified
type: chronology
{1466}
hide / / print
ref: -0 tags: optical gain media lasers cross section dye date: 06-13-2019 15:13 gmt revision:2 [1] [0] [head]

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, σ eσ \sigma_e - \sigma^\star most important.
  • Bacteria can actually subsist on rhodamine-similar sulfonated dyes in aqueous solutions! Wow.

{238}
hide / / print
ref: SidibAc)-1997.06 tags: GPi anatomy retrograde tracing VL ventrolateral CM centromedian thalamus GPe striatum date: 03-11-2007 06:08 gmt revision:0 [head]

PMID-9183697 Efferent connections of the internal globus pallidus in the squirrel monkey: I. Topography and synaptic organization of the pallidothalamic projection.

  • ventrolateral (e.g. toward the bottom & side :) GPi projects to the postcommisural putamen & the VL thalamus & central CM.
  • dorsal GPi projects to the caudate and ventral striatum ("limbic striatum")
  • both areas also project to nuclei in the thalamus:
    • parvocellular ventral anterior nucleus (VApc)
    • dorsal VL
    • caudal CM/PF
  • the parafasicular nucleus (PF) was a site of a large number of associative/limbic projections.

{127}
hide / / print
ref: bookmark-0 tags: thalamus basal ganglia neuroanatomy centromedian red nucleus images date: 0-0-2007 0:0 revision:0 [head]

http://www.neuroanatomy.wisc.edu/coro97/contents.htm --coronal sections through the thalamus, very nice!