Near-infrared broad-band cavity enhanced absorption spectroscopy using a superluminescent light emitting diode
W. Denzer, M. L. Hamilton, G. Hancock, M. Islam, C. E. Langley, R. Peverall and G. A. D. Ritchie,  Analyst, 2009, 134, 2220

Rapid passage effects in nitrous oxide induced by a chirped external cavity quantum cascade laser. J. H. van Helden, R. Peverall, G. A. D. Ritchie, and R. J. Walker. Appl. Phys. Lett. 94, 051116 ; DOI:10.1063/1.3079420, (2009).

Direct and wavelength modulation spectroscopy using a cw external cavity quantum cascade laser. G. Hancock, J. H. van Helden, R. Peverall, G. A. D. Ritchie, and R. J. Walker. Appl. Phys. Lett. 94, 201110; DOI:10.1063/1.3141521 (2009).

High-Resolution Absorption Studies of the 1A2−1A1 202401 Band of Formaldehyde. Martin B. Crow, Alex Gilchrist, Gus Hancock, Rob Peverall, Graham Richmond, Grant A. D. Ritchie and Sarah R. Taylor. J. Phys. Chem. A. , 113 (24), pp 6689–6696 (2009).

Characterization of an external cavity diode laser based ring cavity NICE-OHMS system.
Claire L. Bell, Gus Hancock, Grant Ritchie, Jean-Pierre van Helden, Robert Peverall, and Nicola van Leeuwen, Optics Express Vol. 17, Iss. 12, pp. 9834–9839 (2009)

3.5 micron high-resolution gas sensing employing a LiNbO3 QPM-DFG waveguide module, L. Ciaffoni, R. Grilli, G. Hancock, A.J. Orr-Ewing, R. Peverall and G.A.D. Ritchie, Appl. Phys. B 94, 517-525 (2009).

Title: Cavity enhanced absorption spectroscopy measurements of pressure-induced broadening and shift coefficients in the υ1 + υ3 combination band of ammonia
Author(s): C.L. Bell, M. Dhib, G. Hancock, G.A.D. Ritchie, J.H. van Heldenand N.J. van Leeuwen
Source: Appl Phys B (2009) 94: 327–336

Title: Optical Feedback Cavity Enhanced Absorption Spectroscopy with Diode Lasers (cover article)
Author(s): S. Baran, G. Hancock, R. Peverall, G.A.D. Ritchie and N.J. van Leeuwen
Source: Analyst, 2009, 134, 197



Title: Time resolved detection of the CF3 photofragment using chirped QCL radiation,
Author(s): G. Hancock, S.J. Horrocks, G.A.D. Ritchie, J.H. van Helden, R. Walker
Source: J. Phys Chem. A in press (DOI: 10.1021/jp804849m)

Title: Methyl iodide photodissociation at 193 nm: The I(P-2(1/2)) quantum yield
Author(s):A. Gilchrist; G Hancock; R. Peverall; G. Richmond; G.A.D. Ritchie; S. Taylor;
Source: JOURNAL OF PHYSICAL CHEMISTRY A Volume: 112 Issue: 20 Pages: 4531-4536

Title: Vibrational distribution in NO(X-2 Pi) formed by self quenching of NO A (2)Sigma(+) (v=0)
Author(s): G. Hancock; M Saunders,
Source: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 10 Issue: 15 Pages: 2014-2019


Title: Dependence of the nascent vibrational distribution of NO(v) on the photolysis wavelength of NO2 in the range lambda=266-327 nm measured by time-resolved Fourier transform infrared emission
Author(s): C. Brooks; G. Hancock, ; M. Saunders,
Source: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 9 Pages: 5232-5240

Title: 266 nm photolysis of CF3I and C2F5I studied by diode laser gain FM spectroscopy
Author(s): G. Hancock, A. Hutchinson, R. Peverall, G. Richmond, G. A. D. Ritchie and S. Taylor
Source: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 9 Issue: 18 Pages: 2234-2239

Title: The number density of ground state atomic oxygen (O(P-3(2))) measured in an inductively coupled plasma chamber by cavity enhanced absorption
Author(s): G Hancock, R Peverall, G A D Ritchie and L J Thornton
Source: JOURNAL OF PHYSICS D-APPLIED PHYSICS Volume: 40 Issue: 15 Pages: 4515-4518

Title: Rotational analysis of the 2v(5) band of formaldehyde
Author(s): S. Saha;  H. Barry;  G. Hancock;  G. A. D. Ritchie; C. M. Western
Source: MOLECULAR PHYSICS Volume: 105 Issue: 5-7 Pages: 797-805

Title: Mid-infrared generation and spectroscopy with a PPLN ridge waveguide
Author(s): W. Denzer, G. Hancock, A. Hutchinson, M. Munday, R. Peverall and G.A.D. Ritchie
Conference Information: Spring Meeting of the German-Physical-Society, Date: MAR 17, 2006 Johann Wolfgang Goethe Univ Frankfurt Frankfurt GERMANY
Source: APPLIED PHYSICS B-LASERS AND OPTICS Volume: 86 Issue: 3 Pages: 437-441

Title: The reaction products of the 193 nm photolysis of vinyl bromide and vinyl chloride studied by time-resolved Fourier transform infrared emission spectroscopy
Author(s): A. Carvalho; G. Hancock; M. Saunders
Source: PHYSICAL CHEMISTRY CHEMICAL PHYSICS Volume: 8 Issue: 37 Pages: 4337-4346

Patent Applications

Measurement of Gas Concentrations in Breath.  Cummings, B. L.; Hamilton, M. L.; Hancock, G.; Peverall, R.; Ritchie, G. A. D.; Robbins, P. A.; UK Patent Application No: 0821188.0.