andrey v. zamyatin femtosecond ultra-broadband light sources 4119 twilight ridge, san diego, ca...
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Andrey V. ZamyatinAndrey V. Zamyatin
Femtosecond Ultra-Broadband Light Femtosecond Ultra-Broadband Light SourcesSources
Femtosecond Ultra-Broadband Light Femtosecond Ultra-Broadband Light SourcesSources
4119 Twilight Ridge, San Diego, CA 92130, USA Tel:: (858) 876-3133 Fax:: (858) 630-4119 Twilight Ridge, San Diego, CA 92130, USA Tel:: (858) 876-3133 Fax:: (858) 630-23762376
E-mail:: E-mail:: [email protected] URL:: www.dmphotonics.comURL:: www.dmphotonics.com
Booth Booth №№ 6166 6166
Introduction
Two broadband supercontinuum sources
Jibe- white light continuum generator
(T:Sapphire laser)
Cannon- based on ultrafast fiber laser source
Introduction
The generation of broadband supercontinuum spectra by injection of high-power ultrashort pulses into nonlinear optical media has been a subject of intensive research
When a high-intensity ultrashort pulse is focused into a transparent medium, a white-light continuum ranging from ultraviolet to infrared is generated
Applications
optical parametric amplification an optical metrology an optical coherence tomography materials characterization pump-probe measurements
Kerr effect
n(I)=n0 + n2I+…
n0- normal reflective index of the medium
n2- the nonlinear reflective index
Optical phase: ωL n/c
E(t) cos (ωt-kx) - electic field of a laser pulse
k= ωn/c –wavenumber
Kerr effect
E(t) cos((ω+ ξt)t - kx)
Taylor expansion around the peak of the ultrafast pulse:
ξ - depends on the nonlinear refractive index, the pulse width, peak of power and distance travelled
Generation of White light
Red wavelengths of the white light pulse travel faster than blue wavelengths
Chirp on an ultrashort pulse
Jibe - WLCG
450-900 nm 350-750 nm
Jibe S Jibe C
Spectral coverage
Nonlinear material Sapphire CaF2
Spectrum of white light continuum
Wavelength, nm
Inte
nsi
ty
WLCG can be easily integrated to the pump-probe systemWLCG can be easily integrated to the pump-probe system
Pump-probe measurements
Harmonic Generator /
OPA
Del
ay li
ne
S
ProbeBeam
PumpBeam
Femtosecond laser
B.S.
RR
R
R
R
R
R
R
R
F.O.Chopper
D
WLCG
Pump-probe measurementsThe result is a plot of time delay vs. absorption/ transmission
The typical three-dimensional data example of Ni(II) tetraphenyltetrabenzoporphyrin (NiTPTBP)
in benzene
Cannon –ultra-broadband light source
Ultra-Broadband Light Source. Based on our ultra fast fiber laser source. This system provides a turnkey, portable source of broadband laser pulses without requiring any user-adjustments to the fiber coupling.
Typical output spectrum
Applications
telecommunication optical Coherence Tomography optical Component Testing flourescence Spectroscopy of Biological Markers
Specification Optical Spectrum covers 1000 - 1900 nm Average Output Power > 80 mW Repetition Rate 50 - 70 MHz Head size: 180x210x70
Ultrafast Applications:
Hatteras- pump probe spectrometer
Beacon- fluorescence up-conversion spectrometer
Jibe- white light continuum
generator
www.dmphotonics.com
Visit our booth 6166 to discuss your applications and requirements