FT Multipass MS probe TDL/CRDS FANTASIO Fourier trANsform,

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Presentation transcript:

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.

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

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) 369-381. Hiden RC PIC Analyser-HPR30 Mass Spec 320mm diameter 28800 tours/min 2850 l/s 1-510 amu

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

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 = 3.2961Ǻ 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.

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

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

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

FTIR Turbo pumps Supersonic expansion CRDS Mass spec.

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.

Chameleon Ultra II OPO FTIR Turbo pumps Supersonic expansion CRDS 50 201 160 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.

Mode locked laser Laser modes

Mode locked laser Optical cavity Laser modes Cavity modes

Mode locked laser FTIR Optical cavity Laser modes Cavity modes

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) 1595-1599. Mode locked laser FTIR Optical cavity Laser modes Cavity modes J. Mandon, G. Guelachvili, N. Picqué, Nature Photonics 3 (2009) 99-102.

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

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

rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2 amin = 3 x 10-7 cm-1 Leff = 150m (R = 99.43 %)

rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2 amin = 3 x 10-7 cm-1 Leff = 150m (R = 99.43 %) Transmission noise = 20% Magic point stabilisation

rms noise equiv. absorption = 5 x 10-8 cm-1 Hz-1/2 amin = 3 x 10-7 cm-1 Leff = 150m (R = 99.43 %) Transmission noise = 20% Magic point stabilisation Femto-FT-CEAS works!

14 700 – 6 329 cm-1 5 882 – 2 857 cm-1

FEMTO FANTASIO