Self-diffraction through cascaded second-order frequency-mixing effects in β-barium borate

1993 ◽  
Vol 18 (8) ◽  
pp. 574 ◽  
Author(s):  
R. Danielius ◽  
G. P. Banfi ◽  
P. Di Trapani ◽  
A. Dubietis ◽  
A. Piskarskas ◽  
...  
Keyword(s):  
Second Order ◽  
Barium Borate ◽  
Mixing Effects ◽  
Frequency Mixing

Investigation on frequency mixing effects in terahertz parametric oscillator with a noncollinear phase-matching scheme

Optik ◽  
2015 ◽  
Vol 126 (9-10) ◽  
pp. 1032-1035
Author(s):  
Zhongyang Li ◽  
Jun Li ◽  
Linfei Liu ◽  
Pibin Bing ◽  
Sheng Yuan ◽  
...  
Keyword(s):  
Parametric Oscillator ◽  
Phase Matching ◽  
Mixing Effects ◽  
Frequency Mixing

Efficient generation of 200–230-nm radiation in beta barium borate by noncollinear sum-frequency mixing

1998 ◽  
Vol 37 (33) ◽  
pp. 7827 ◽  
Author(s):  
Gopal C. Bhar ◽  
Pathik Kumbhakar ◽  
Udit Chatterjee ◽  
Abani Mohan Rudra ◽  
Yasuhiko Kuwano ◽  
...  
Keyword(s):  
Barium Borate ◽  
Sum Frequency ◽  
Efficient Generation ◽  
Frequency Mixing

Diode-Laser-Based Sensor Measurements of Nitric Oxide and Carbon Monoxide in Combustion Exhaust Streams

2003 ◽  
Author(s):  
Thomas N. Anderson ◽  
Rodolfo Barron-Jimenez ◽  
Jerald A. Caton ◽  
Robert P. Lucht ◽  
Sukesh Roy ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Carbon Monoxide ◽  
Detection Limit ◽  
Diode Laser ◽  
Path Length ◽  
Barium Borate ◽  
Co Sensor ◽  
No Sensor ◽  
Absorption Measurements ◽  
Frequency Mixing

All-solid-state continuous-wave (cw) laser systems for ultraviolet (UV) absorption measurements of the nitric oxide (NO) molecule and mid-infrared (IR) absorption measurements of carbon monoxide (CO) were developed and demonstrated. For the NO sensor, 250 nW of tunable cw UV radiation at 226.8 nm is produced by sum-frequency-mixing in a beta-barium borate crystal. For the CO sensor, 2μW of tunable cw IR radiation at 4.5 μm is produced by difference-frequency mixing in a periodically-poled lithium niobate crystal. A tunable external-cavity diode laser (ECDL) provides one of the fundamental beams for both processes so that the wavelength of the generated UV/IR can be tuned over NO/CO absorption lines to produce a fully resolved absorption spectrum. The sensors were used for measurements in the exhaust stream of an operating auxiliary power unit (APU) gas turbine engine and a well-stirred reactor (WSR). During these tests, NO was measured in the exhaust at levels below 10 ppm. For measurements at levels above 20 ppm, the NO emission levels obtained using the new sensor agreed with the results of probe sampling chemiluminescent analyzer results to within 10%. A detection limit of 0.8 ppm of per meter path length at 1000 K is estimated for the NO sensor. Measurements with the CO sensor demonstrated an agreement with extractive probe sampling to within 15%. The estimated detection limit of the CO sensor is a few ppm per meter path length at 1000 K.

Generation of Tunable Ultraviolet/Visible Radiation by Sum-Frequency Mixing in Barium Borate

1990 ◽  
Vol 29 (Part 2, No. 7) ◽  
pp. L1127-L1129 ◽  
Author(s):  
G. C. Bhar ◽  
U. Chatterjee ◽  
S. Das
Keyword(s):  
Barium Borate ◽  
Visible Radiation ◽  
Sum Frequency ◽  
Frequency Mixing
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