Downloaded from orbit.dtu.dk on: Jul 28, 2017
Engineering of effective quadratic and cubic nonlinearities in two-period QPM gratings
Bang, Ole; Clausen, Carl A. Balslev; Torner, L.
Published in:
Conference on Lasers and Electro-Optics
Link to article, DOI:
10.1109/CLEO.2000.906838
Publication date:
2000
Document Version
Publisher's PDF, also known as Version of record
Link back to DTU Orbit
Citation (APA):
Bang, O., Clausen, C. A. B., & Torner, L. (2000). Engineering of effective quadratic and cubic nonlinearities in
two-period QPM gratings. In Conference on Lasers and Electro-Optics (pp. 147-148). OSA Technical Digest,
Optical Society of America. DOI: 10.1109/CLEO.2000.906838
General rights
Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners
and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.
• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.
• You may not further distribute the material or use it for any profit-making activity or commercial gain
• You may freely distribute the URL identifying the publication in the public portal
If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately
and investigate your claim.
1-UEslIAY AFTERNOON / GLEU 2000 / %47
CTuA14
148 / CLEO 2000 / TUESDAY AFERNOON
IO.
11.
12.
0.Jlang~Y.S. Kivshar, A.V. liury;ik,A. Ik
Rossi, S. Trillo, "1wo~diiiieiision;iIsolitary wavcs in incilia with qu;alvatic i n i d
cubic iionlinearily," I'liys. I(cv. li 58,
5057 (IWS),
A. Kobyakiiv, I:. l,ederer, 0.liang, Y.S.
Kivshar, "N~i~iline;ir
phase shilt a t i d alloptical switching i n qiiasi-pli;iseInatchcd quadratic media," Opt. I.ctt. 23,
506 (1998).
0 . Bang, C , Ualslev (:lawen, 1'.1.. Cliristiansen, L. 'riiriier, "Engineering coiiipcliiig nonlinearities," Opt. l,etl. 24,
1413 (1999),
CTuA15
Generation of <4 cm-' transform
limited pulses in IR by difference
frequency mixing of stretched pulses
G,Veita.;, I<.
Iknielius. t:,, Schreiber,* r.nser
I~ecetircli(:eriier,
Viliiius Uwiv., .Siiiilet&io
Aveiiiie 9, l i i i i l r l i ~ i g3 , 2040 Viliiiiis, ~ ~ i t l r i i r r w i a ;
E-miiil: ~ e i l i i i ~ i i i u s . i ~ c i f rvii.11
ts~~//:
previous paper ivc h w c prcscntecl the
thcoictical background a n d experimental veriiication o( iiarriiw-b;indwi~Itli pulse generaLino via difkrcnce frequency iiiixiiig.l 'I'lic
tunahilily o l generated iiarrnw~I~andwidth
pulses wiis restricted to rather iiarrow wavelength r m g e in t1ieproxiriiityoll pin, w l i i c l i is
not olgseat plaLtical interest.
111thc present cimtribotion, we report 011
gcncrtition o f narrow-bandwidtli p u l s e s
within a 3-5 p i wavelength region that caii be
applied tci highly selective time-resnlved vi1il.ational spcctrmuq>y.
As a p u m p source we uscd a picosecond
'1i:Sappliire laser system delivering R O O - n m wavclcngtli I)iilscs with duration of 1.8 11s ,ind
energyof 1.5 i i i J , A p i s 1 ofthelases output was
trcquciicy douliled and used to plump a n oplic i i l par;nnetric gcnel.alor-ampl
which prodaced '- 1.3-lis pulses in (170-2600mil-wavclcngth ruigc. '%e idlcr witvc of the
Ol'O/A was used as a seed for subsequent diffcrcnic lrcqucncy (UP) iiiixinglparametric
aoiplificatinn p i i t i i p c d by 800-nm pulses.
111 the tirst series of expcrimcnts we generated the diflerence frequency in a cnnventional
r and seed pulses wcrc mixed in a
7-inn-thick K l ' A cryskil without stretching.
The VI' pulses that were pr"duccd llad a bandwidth of 12.3 ciii-'
I).
We memired duration of mipliiicd seed
pulse to he 1.2 1's (1:ig. 2). Crimptiter siiiiiiliition o l t h e prncess 11.1s slinwri that b ~ i t hUt:
pulsc and :~mplificdseed liave similar duration
wlicn p n p velocity mismatch is as sm;ill 'IS in
niir case. Witli tliisassuml,tionwc estiiniitc tlic
tiiiic~b;iodwidtliproduct d t h c 1R pulses t i i l i e
,-0.43, whicli is very close to t l i c time111our
L
12