Microsecond fiber laser pumped, single-frequency optical parametric oscillator for trace gas detection.

We report on the first microsecond doubly resonant optical parametric oscillator (OPO). It is based on a nested cavity OPO architecture allowing single longitudinal mode operation and low oscillation threshold (few microjoule). The combination with a master oscillator-power amplifier fiber pump laser provides a versatile optical source widely tunable in the 3.3-3.5 μm range with an adjustable pulse repetition rate (from 40 to 100 kHz), high duty cycle (~10(-2)) and mean power (up to 25 mW in the idler beam). The potential for trace gas sensing applications is demonstrated through photoacoustic detection of atmospheric methane.

[1]  Irina T. Sorokina,et al.  Mid-infrared coherent sources and applications , 2008 .

[2]  A. Kosterev,et al.  Applications of quartz tuning forks in spectroscopic gas sensing , 2005 .

[3]  W R Bosenberg,et al.  Long-pulse, amplitude-modulated optical parametric oscillator. , 1996, Applied optics.

[4]  William W. Bewley,et al.  Mid-infrared distributed-feedback interband cascade lasers with continuous-wave single-mode emission to 80 °C , 2012 .

[5]  B Hardy,et al.  Compact, single-frequency, doubly resonant optical parametric oscillator pumped in an achromatic phase-adapted double-pass geometry. , 2011, Optics letters.

[6]  Jean-Michel Melkonian,et al.  Vernier frequency sampling: a new tuning approach in spectroscopy—application to multi-wavelength integrated path DIAL , 2012 .

[7]  K. Boller,et al.  Microsecond pulsed optical parametric oscillator pumped by a Q-switched fiber laser. , 2003, Optics letters.

[8]  R. Bartlome,et al.  Trace gas monitoring with infrared laser-based detection schemes , 2008 .

[9]  A. Henderson,et al.  Stable, continuously tunable operation of a diode-pumped doubly resonant optical parametric oscillator. , 2000, Optics letters.

[10]  Antoine Godard,et al.  Infrared (2–12 μm) solid-state laser sources: a review , 2007 .

[11]  Denis D Arslanov,et al.  Real-time, subsecond, multicomponent breath analysis by Optical Parametric Oscillator based Off-Axis Integrated Cavity Output Spectroscopy. , 2011, Optics express.

[12]  Yonghang Shen,et al.  PPMgLN-Based High-Power Optical Parametric Oscillator Pumped by Yb $^{{\bm 3}{\bm +}}$-Doped Fiber Amplifier Incorporates Active Pulse Shaping , 2009, IEEE Journal of Selected Topics in Quantum Electronics.