1. Special Issue: Trends in laser sources, spectroscopic techniques and their applications to trace-gas detection

   Editorial Pages: 143 - 143

2. Backward enhanced emission from multiphoton processes in aerosols

   • V. Boutou
   • C. Favre
   • J.P. Wolf

   Pages: 145 - 152

3. Tunable ultraviolet optical parametric oscillator for differential absorption lidar measurements of tropospheric ozone

   • A. Fix
   • M. Wirth
   • D. Weidauer

   Pages: 153 - 163

4. Airborne all-solid-state DIAL for water vapour measurements in the tropopause region: system description and assessment of accuracy

   • G. Poberaj
   • A. Fix
   • G. Ehret

   Pages: 165 - 172

5. Cavity ring-down spectroscopy for atmospheric trace gas detection: application to the nitrate radical (NO₃)

   • S.S. Brown
   • H. Stark
   • A.R. Ravishankara

   Pages: 173 - 182

6. A fast-response near-infrared tunable diode laser absorption spectrometer for in situ measurements of CH₄ in the upper troposphere and lower stratosphere

   • E.C. Richard
   • K.K. Kelly
   • A.F. Tuck

   Pages: 183 - 194

7. Methane analyzer based on TDL’s for measurements in the lower stratosphere: design and laboratory tests

   • F. D’Amato
   • P. Mazzinghi
   • F. Castagnoli

   Pages: 195 - 202

8. Trace complex-molecule detection using near-IR diode lasers

   • A.G. Berezin
   • O.V. Ershov
   • A.I. Nadezhdinskii

   Pages: 203 - 214

9. Differential Helmholtz resonant photoacoustic cell for spectroscopy and gas analysis with room-temperature diode lasers

   • K. Song
   • H.K. Cha
   • V. Zeninari

   Pages: 215 - 227

10. Digital, phase-sensitive detection for in situ diode-laser spectroscopy under rapidly changing transmission conditions

    • T. Fernholz
    • H. Teichert
    • V. Ebert

    Pages: 229 - 236

11. Diode laser based in situ detection of alkali atoms: development of a new method for determination of residence-time distribution in combustion plants

    • E. Schlosser
    • J. Wolfrum
    • V. Ebert

    Pages: 237 - 247

12. Handheld, battery-powered near-IR TDL sensor for stand-off detection of gas and vapor plumes

    • R.T. Wainner
    • B.D. Green
    • R. Naper

    Pages: 249 - 254

13. Development of a cw-laser-based cavity-ringdown sensor aboard a spacecraft for trace air constituents

    • A.R. Awtry
    • J.H. Miller

    Pages: 255 - 260

14. Sensitive absorption measurements in the near-infrared region using off-axis integrated-cavity-output spectroscopy

    • D.S. Baer
    • J.B. Paul
    • A. O’Keefe

    Pages: 261 - 265

15. Rapidly swept, continuous-wave cavity ringdown spectroscopy with optical heterodyne detection: single- and multi-wavelength sensing of gases

    • Y. He
    • B.J. Orr

    Pages: 267 - 280

16. Development of a tunable mid-IR difference frequency laser source for highly sensitive airborne trace gas detection

    • D. Richter
    • A. Fried
    • F.K. Tittel

    Pages: 281 - 288

17. ¹³CO₂/¹²CO₂ isotopic ratio measurements using a difference frequency-based sensor operating at 4.35 μm

    • M. Erdélyi
    • D. Richter
    • F.K. Tittel

    Pages: 289 - 295

18. Portable difference-frequency laser-based cavity leak-out spectrometer for trace-gas analysis

    • S. Stry
    • P. Hering
    • M. Mürtz

    Pages: 297 - 303

19. Trace-gas sensing in the 3.3-μm region using a diode-based difference-frequency laser photoacoustic system

    • C. Fischer
    • M.W. Sigrist

    Pages: 305 - 310

20. Rapid formaldehyde monitoring in ambient air by means of mid-infrared cavity leak-out spectroscopy

    • H. Dahnke
    • G. von Basum
    • M. Mürtz

    Pages: 311 - 316

21. The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems

    • T.J. Kulp
    • S.E. Bisson
    • T.G. McRae

    Pages: 317 - 327

22. Tuning and stability of a continuous-wave mid-infrared high-power single resonant optical parametric oscillator

    • M.M.J.W. van Herpen
    • S. Li
    • F.J.M. Harren

    Pages: 329 - 333

23. A versatile photoacoustic spectrometer for sensitive trace-gas analysis in the mid-infrared wavelength region (5.1–8.0 and 2.8–4.1 μm)

    • S.T. Persijn
    • E. Santosa
    • F.J.M. Harren

    Pages: 335 - 342

24. Sub-part-per-billion detection of nitric oxide in air using a thermoelectrically cooled mid-infrared quantum cascade laser spectrometer

    • D.D. Nelson
    • J.H. Shorter
    • M.S. Zahniser

    Pages: 343 - 350

25. Chemical sensing with pulsed QC-DFB lasers operating at 15.6 μm

    • A.A. Kosterev
    • R.F. Curl
    • J. Faist

    Pages: 351 - 357

26. Signal-to-noise enhancement techniques for quantum cascade absorption spectrometers employing optimal filtering and other approaches

    • R.S. Disselkamp
    • J.F. Kelly
    • G.A. Anderson

    Pages: 359 - 366

27. Application of mid-infrared cavity-ringdown spectroscopy to trace explosives vapor detection using a broadly tunable (6–8 μm) optical parametric oscillator

    • M.W. Todd
    • R.A. Provencal
    • J.T. Arnold

    Pages: 367 - 376

28. Photoacoustic gas sensing employing fundamental and frequency-doubled radiation of a continuously tunable high-pressure CO₂ laser

    • A. Romann
    • M.W. Sigrist

    Pages: 377 - 383

29. Detection of N₂O by photoacoustic spectroscopy with a compact, pulsed optical parametric oscillator

    • D. Costopoulos
    • A. Miklós
    • P. Hess

    Pages: 385 - 389

30. Laser-based photoacoustic ammonia sensors for industrial applications

    • M.B. Pushkarsky
    • M.E. Webber
    • C.K.N. Patel

    Pages: 391 - 396

31. Simultaneous online detection of isoprene and isoprene-d2 using infrared photoacoustic spectroscopy

    • F. Kühnemann
    • M. Wolfertz
    • W. Boland

    Pages: 397 - 403