PMID- 21847203
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20111219
LR  - 20181023
IS  - 1539-4794 (Electronic)
IS  - 0146-9592 (Linking)
VI  - 36
IP  - 16
DP  - 2011 Aug 15
TI  - Pump-probe spectroscopy on photoinitiators for stimulated-emission-depletion 
      optical lithography.
PG  - 3188-90
LID - 10.1364/OL.36.003188 [doi]
AB  - We report on femtosecond pump-probe experiments on two different photoinitiators 
      in solution. These two molecules have recently appeared as attractive candidates 
      for far-field optical lithography based on stimulated-emission-depletion (STED) 
      inspired approaches aiming at beating Abbe's diffraction limit. For the case of 
      7-diethylamino-3-thenoylcoumarin (DETC), we find that stimulated emission clearly 
      dominates over excited-state absorption, whereas the opposite holds true for the 
      case of isopropylthioxanthone. We argue that it is desirable that stimulated 
      emission dominates over excited-state absorption as depletion mechanism in STED 
      photoresists. Thus, DETC is an attractive corresponding photoinitiator.
CI  - (c) 2011 Optical Society of America
FAU - Wolf, Thomas J A
AU  - Wolf TJ
AD  - Institut fir Physikalische Chemie, Karlsruhe Institute of Technology (KIT), 
      D-76128 Karlsruhe, Germany. thomas.wolf@kit.edu
FAU - Fischer, Joachim
AU  - Fischer J
FAU - Wegener, Martin
AU  - Wegener M
FAU - Unterreiner, Andreas-Neil
AU  - Unterreiner AN
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Lett
JT  - Optics letters
JID - 7708433
EDAT- 2011/08/19 06:00
MHDA- 2011/08/19 06:01
CRDT- 2011/08/18 06:00
PHST- 2011/08/18 06:00 [entrez]
PHST- 2011/08/19 06:00 [pubmed]
PHST- 2011/08/19 06:01 [medline]
AID - 221708 [pii]
AID - 10.1364/OL.36.003188 [doi]
PST - ppublish
SO  - Opt Lett. 2011 Aug 15;36(16):3188-90. doi: 10.1364/OL.36.003188.