High resolution and medium resolution IR OPOs

 

LaserSpec nanosecond IR OPOs are based on a single step conversion in LiNbO3 , KTP or KTA with a bandwidth narrowing intracavity etalon plate. The simplicity of the design means high conversion efficiency and simple operation and rugged mechanics. Bandwidth of the OPO can be adagpted from a few cm-1 to 0,02 cm-1. Tunability from 700 nm to 22 m.

 

The following figures illustrate the conversion efficiency, rugged mechanics, and frequency ressetability of the OPO.

 

 

 

 

 

 

 

 

 

 

 


 

 

 

 

 

Comparison of atmospheric absorption spectra meaured withthe OPO (blue line) Power spectrum of the IR OPO pumped with 500 mJ@1064 nm

and with 1 and 0.5 cm-1 resolution FFT-IR (red line).

 

 


 

 

 

 

 

 

 

 

 

 

 

 

Shot to shot stability of the IR OPO @ 3 m Rugged housing 55x37x11 cm or

15x34x13 cm housing attached to Brilliant B pump laser

 

Example of publications using these OPOs.

 

Intramolecular recognition in a jet-cooled short peptide chain: gamma-turn helicity probed by a neighbouring residue

E. Gloaguen, F. Pagliarulo, V. Brenner, W. Chin, F. Piuzzi, B. Tardivel, and M. Mons,

Phys. Chem. Chem. Phys. 9 (2007) 4491

 

Spectroscopic evidence for the formation of helical structures in gas-phase short peptide chains

V. Brenner, F. Piuzzi, I. Dimicoli, B. Tardivel, and M. Mons, .

J. Phys. Chem. A. 111 (2007) 7347.

 

Chirality-controlled formation of beta-turn secondary structures in short peptide chains: Gas-phase experiment versus quantum chemistry

V. Brenner, F. Piuzzi, I. Dimicoli, B. Tardivel, and M. Mons,

Angew. Chem.-Int. Edit. 46 (2007) 2463.

 

Probing the competition between secondary structures and local preferences in gas phase isolated peptide backbones.

W. Chin, F. Piuzzi, I. Dimicoli, and M. Mons,

Phys. Chem. Chem. Phys. 8 (2006) 1033.

 

Gas phase formation of a 3(10)-helix in a three-residue peptide chain: Role of side chain-backbone interactions as evidenced by IR-UV double resonance experiments.

W. Chin, F. Piuzzi, J.P. Dognon, L. Dimicoli, B. Tardivel, and M. Mons,

J. Am. Chem. Soc. 127 (2005) 11900.

 

Gas-phase models of gamma turns: Effect of side-chain/backbone interactions investigated by IR/UV

W. Chin, F. Piuzzi, J.P. Dognon, I. Dimicoli, and M. Mons,

spectroscopy and quantum chemistry.

J. Chem. Phys. 123 (2005).

 

Secondary structures of Val-Phe and Val-Tyr( Me) peptide chains in the gas phase: effect of the nature of the protecting groups.

W. Chin, J.P. Dognon, F. Piuzzi, I. Dimicoli, and M. Mons,

Mol. Phys. 103 (2005) 1579.

 

W. Chin, M. Mons, J.P. Dognon, R. Mirasol, G. Chass, I. Dimicoli, F. Piuzzi, P. Butz, B. Tardivel, I. Compagnon, G. von Helden, and G. Meijer, The gas-phase dipeptide analogue acetyl-phenylalanyl-amide: A model for the study of side chain/backbone interactions in proteins

J. Phys. Chem. A. 109 (2005) 5281.

 

Secondary structures of short peptide chains in the gas phase: Double resonance spectroscopy of protected dipeptides.

W. Chin, J.P. Dognon, C. Canuel, F. Piuzzi, I. Dimicoli, M. Mons, I. Compagnon, G. von Helden, and G. Meijer,

J. Chem. Phys. 122 (2005).

 

Spectroscopic evidence for gas-phase formation of successive beta-turns in a three-residue peptide chain.

W. Chin, I. Compagnon, J.P. Dognon, C. Canuel, F. Piuzzi, I. Dimicoli, G. von Helden, G. Meijer, and M. Mons,J. Am. Chem. Soc. 127 (2005) 1388.

 

Intrinsic folding of small peptide chains: Spectroscopic evidence for the formation of beta-turns in the gas phase.

W. Chin, J.P. Dognon, F. Piuzzi, B. Tardivel, I. Dimicoli, and M. Mons, J. Am. Chem. Soc. 127 (2005) 707.

 

Gas phase rotamers of the nucleobase 9-methylguanine enol and its monohydrate: Optical spectroscopy and quantum mechanical calculations.

W. Chin, M. Mons, F. Piuzzi, B. Tardivel, I. Dimicoli, L. Gorb, and J. Leszczynski, J. Phys. Chem. A. 108 (2004) 8237.

 

Competition between local conformational preferences and secondary structures in gas-phase model tripeptides as revealed by laser spectroscopy and theoretical chemistry.

W. Chin, M. Mons, J.P. Dognon, F. Piuzzi, B. Tardivel, and I. Dimicoli, Phys. Chem. Chem. Phys. 6 (2004) 2700.

 

Tautomerism of the DNA base guanine and its methylated derivatives as studied by gas-phase infrared and ultraviolet spectroscopy.

M. Mons, I. Dimicoli, F. Piuzzi, B. Tardivel, and M. Elhanine, J. Phys. Chem. A. 106 (2002) 5088.

 

Water Complexes of Styrene and 4-Fluorostyrene: A combined Electronic, Vibrational Spectroscopic and Ab-Initio Investigation.

P. C. Singh, S. Maity, G. Naresh Patwari.

J. Phys. Chem. A. 112 (2008) 9702.

 

Infrared-Optical Double Resonance Spectroscopy: A selective and sensitive tool to investigate structures of molecular clusters in the gas-phase.

P. C. Singh, G. Naresh Patwari.

Curr. Sci. 95 (2008) 469.

 

Infrared-Optical Double-Resonance Measurements on O-H∙∙∙H-Ge Diydrogen- Bonded Phenol-triethylgermanium hydride Complex in the Gas Phase.

P. C. Singh, D. K. Maity, G. Naresh Patwari.

J. Phys. Chem. A. 112 (2008) 5930.

 

IR-UV double resonance spectroscopic investigation of phenylacetylene-alcohol complexes. Alkyl group induced hydrogen bond switching.

P. C. Singh, G. Naresh Patwari.

J. Phys. Chem. A. 112 (2008) 5121.

 

Electronic and vibrational spectroscopic investigation of phenylacetylene-amine complexes. Evidence for the diversity in the intermolecular structures. 

P. C. Singh, G. Naresh Patwari.

J. Phys. Chem. A. 112 (2008) 4426.