Simultaneous detection of methane, oxygen and water vapour utilising near-infrared diode lasers in conjunction with difference-frequency generation

2000 ◽  
Vol 71 (6) ◽  
pp. 853-857 ◽  
Author(s):  
U. Gustafsson ◽  
J. Sandsten ◽  
S. Svanberg
Keyword(s):  
Water Vapour ◽  
Near Infrared ◽  
Diode Lasers ◽  
Simultaneous Detection ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Frequency Generation

scholarly journals Mid-infrared optical frequency comb in the 2.7–4.0 μm range via difference frequency generation from a compact laser system

2020 ◽  
Vol 8 ◽  
Author(s):  
Lian Zhou ◽  
Yang Liu ◽  
Gehui Xie ◽  
Chenglin Gu ◽  
Zejiang Deng ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Near Infrared ◽  
Quantum Noise ◽  
Frequency Comb ◽  
Laser System ◽  
Difference Frequency Generation ◽  
Difference Frequency ◽  
Average Output ◽  
Mid Infrared ◽  
Frequency Generation

Abstract We report on the generation of a mid-infrared (mid-IR) frequency comb with a maximum average output power of 250 mW and tunability in the 2.7–4.0 μm region. The approach is based on a single-stage difference frequency generation (DFG) starting from a compact Yb-doped fiber laser system. The repetition rate of the near-infrared (NIR) comb is locked at 75 MHz. The phase noise of the repetition rate in the offset-free mid-IR comb system is measured and analyzed. Except for the intrinsic of NIR comb, environmental noise at low frequency and quantum noise at high frequency from the amplifier chain and nonlinear spectral broadening are the main noise sources of broadening the linewidth of comb teeth, which limits the precision of mid-IR dual-comb spectroscopy.

Optical mixing in GaAs/InGaAs/InGaP butt-joint diode lasers: new scheme for the sum- and difference-frequency generation

2006 ◽  
Author(s):  
Sergey M. Nekorkin ◽  
Boris N. Zvonkov ◽  
Anton A. Biryukov ◽  
Aleksey A. Belyanin ◽  
Vladimir Ya. Aleshkin ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Difference Frequency Generation ◽  
Butt Joint ◽  
Difference Frequency ◽  
Optical Mixing ◽  
Frequency Generation

Room-temperature intracavity difference-frequency generation in butt-joint diode lasers

2008 ◽  
Vol 92 (2) ◽  
pp. 021122 ◽  
Author(s):  
B. N. Zvonkov ◽  
A. A. Biryukov ◽  
A. V. Ershov ◽  
S. M. Nekorkin ◽  
V. Ya. Aleshkin ◽  
...  
Keyword(s):  
Room Temperature ◽  
Diode Lasers ◽  
Difference Frequency Generation ◽  
Butt Joint ◽  
Difference Frequency ◽  
Frequency Generation
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