1. FT Multipass MS probe TDL/CRDS FANTASIO Fourier trANsform,
K. Didriche, P. Macko, M. Herman, J. Thiévin, A. Benidar, and R. Georges, JQSRT 105 (2007) 128. FT
Multipass
K. Didriche
FANTASIO
Fourier trANsform,
Tunable diode and
quadrupole mAss
spectrometers interfaced to a
Supersonic expansIOn MS
probe
TDL/CRDS
M. Herman, K. Didriche, D. Hurtmans, B. Kizil, P. Macko, A. Rizopoulos, and P. Van Poucke, Mol. Phys. 105 (2007) 843.

2. Leybold MAG 3200CT Turbopump
Bruker IFS120HR FTIR
Leybold MAG 3200CT Turbopump
320mm diameter
28800 tours/min
2850 l/s

3. Hiden RC PIC Analyser-HPR30 Mass Spec
Multipass
S/N~5
R. Pétry, S. Klee, M. Lock, B.P. Winnewisser, and M. Winnewisser J. Mol. Spectrosc. 612 (2002)
Hiden RC PIC Analyser-HPR30 Mass Spec
320mm diameter
28800 tours/min
2850 l/s
1-510 amu

4. DFB, ILX lightwave 1 MHz linewidth
PZT
>
CW-CRDS ~ 6180 – 6673 cm-1 L3 M4
1000 mm
t  20 ms
FSR ~ 955 MHz
540 mm 1%
F-P
>
>
> D1
1000 mm M3
30 mm 50
99% M1
>
>
>
> L1 L2
AOM
TDL M2
>
DFB, ILX lightwave 1 MHz linewidth
Peter Macko

5. 2CH excitation C2H2—Ar C2H2—CO2 C2H2—N2O R = 3.2961Ǻ Q = 77+/-5 °
C. Lauzin, K. Didriche, P. Macko, J. Liévin, J. Demaison, and M. Herman, J. Phys. Chem. A, 113 (2009) 2359
R = Ǻ
Q = 77+/-5 °
3.289Ǻ
C2H2—Ar
C2H2—CO2
C2H2—N2O
3.99Ǻ
C. Lauzin, K. Didriche, J. Liévin, M. Herman, and A. Perrin, J. Chem. Phys., in press
K. Didriche, C. Lauzin, P. Macko, M. Herman, and W.J. Lafferty, Chem. Phys. Letters, 469 (2009) 35.

6. 12C2H2
n1+n3
FTIR Multipass
CW- CRDS
CRDS
C2H2: 0.25 l/min
Ar: 2 l/min

7. D2 M4 L3
FEMTO
FANTASIO
PZT
Supersonic expansion
CRDS
Mass spec.

8. Turbo pumps Supersonic expansion CRDS Mass spec.
A. Rizopoulos
C. Lauzin
X. de Ghellinck
Turbo pumps
Supersonic expansion
CRDS
Mass spec.

9. FTIR
Turbo pumps
Supersonic expansion
CRDS
Mass spec.

10. FT-ICLAS FTIR leq= (t1-t0) c l/L Optical pump (t0) NIR Laser (t1)
Ti:Sa
GAZ L l
FTIR
FT-ICLAS
S. Kassi, C. Depiesse, M. Herman, and D. Hurtmans, Mol. Phys. 101 (2003) 1155.

11. Chameleon Ultra II OPO FTIR Turbo pumps Supersonic expansion CRDS
160
Chameleon Ultra II
OPO
2090.4
FTIR
320
500
129.1
153.5
216.5
Turbo pumps
1090 70
300
Supersonic expansion 70
230
100
CRDS
Mass spec.

12. Mode locked laser
Laser modes

13. Mode locked laser
Optical
cavity
Laser modes
Cavity modes

14. Mode locked laser
FTIR
Optical
cavity
Laser modes
Cavity modes

15. M. J. Thorpe, K. D. Moll, R. J. Jones, B. Safdi, J
M.J. Thorpe, K.D. Moll, R.J. Jones, B. Safdi, J. Ye, Science 311 (2006)
Mode locked laser
FTIR
Optical
cavity
Laser modes
Cavity modes
J. Mandon, G. Guelachvili, N. Picqué, Nature Photonics 3 (2009)

16. Femto-FT-CEAS FTIR Mode locked laser Optical cavity Laser modes
Cavity modes

17. AO OI ML laser D L3 FTIR S. Kassi L1 L2 M1 M2 M3 M4 M5 S1 HR2 HR1
First order
P Z T
Lock-in
80 kHz mod.
err sig D L1 L2 L3 M1 M2 M3 M4 M5 S1
HR2
HR1
Tr. plate
optical cavity
FM AO Driver
PID OI
S. Kassi

19. rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2
amin = 3 x 10-7 cm-1
Leff = 150m (R = %)

20. rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2
amin = 3 x 10-7 cm-1
Leff = 150m (R = %)
Transmission noise = 20%
Magic point stabilisation

21. rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2
amin = 3 x 10-7 cm-1
Leff = 150m (R = %)
Transmission noise = 20%
Magic point stabilisation
Femto-FT-CEAS works!

22. – cm-1
5 882 – 2 857
cm-1

23. FEMTO FANTASIO