Applied Physics B
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Comparison between single- and double-pulse LIBS at different air pressures on silicon target
Applied Physics B - Tập 83 - Trang 651-657 - 2006
A comparative study between single- and double-pulse laser-induced breakdown spectroscopy (LIBS) was performed on an n-type silicon(111) target. A new mobile double-pulse instrument for LIBS analysis was used for the measurements. The experiment was carried out at different air pressures of 0.7, 470 and 1000 hPa. It has been found that, in the case of double-pulse LIBS, the emission intensities of...... hiện toàn bộ
Analysis of uncertainties in instantaneous soot volume fraction measurements using two-dimensional, auto-compensating, laser-induced incandescence (2D-AC-LII)
Applied Physics B - Tập 102 - Trang 173-183 - 2010
Laser-induced incandescence (LII) is an optical measurement technique capable of measuring soot volume fraction over a wide range of conditions. However, development of two-dimensional auto-compensating LII (2D-AC-LII) in the literature has been limited and until now, instantaneous measurements have not been demonstrated. In this paper, we successfully demonstrate instantaneous 2D-AC-LII soot volu...... hiện toàn bộ
An acoustic model for microresonator in on-beam quartz-enhanced photoacoustic spectroscopy
Applied Physics B - - 2012
Based on a new spectrophone configuration using a single microresonator (mR) in “on beam” quartz-enhanced photoacoustic spectroscopy (QEPAS), referred to “half on beam QEPAS”, a classical acoustic model originated from “orifice ended tube” was introduced to model and optimize the mR geometrical parameters. The calculated optimum mR parameters were in good agreement with the experimental results ob...... hiện toàn bộ
Effects of temperature on factors relevant to laser operation near 1.6 µm wavelength in resonantly (in-band) pumped CaF2:Er and SrF2:Er crystals: a comparative study
Applied Physics B - Tập 129 - Trang 1-10 - 2023
Single crystals of CaF2 and SrF2 containing Er3+ ions with concentrations between 0.01 and 0.6 at% respectively, were grown using the temperature gradient technique (TGT). Absorption spectra related to the 4I15/2 → 4I13/2 transition of Er3+ ions were measured at 5 K to investigate the properties of the crystal field splitting of the 4I13/2 multiplet, and at several temperatures in the region 80 K ...... hiện toàn bộ
Sound-velocity measurements in gases by laser-induced electrostrictive gratings
Applied Physics B - Tập 62 - Trang 103-107 - 1996
Laser-induced electrostrictive gratings have been applied to measure the adiabatic sound velocity in various gases on a single-pulse basis. The gratings are generated by the interference of two parallel polarized, crossed excitation beams arising from a pulsed Nd: YAG laser at 532.1 nm, and are detected by diffracting a probe beam originating from a cw Ar+ laser operating single-line at 514.5 nm. ...... hiện toàn bộ
The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems
Applied Physics B - Tập 75 - Trang 317-327 - 2002
Quasi-phase-matched (QPM) materials allow the generation of spectroscopically useful infrared radiation in an efficient and broadly tunable format. Here, we describe several applications of QPM-based light sources to remote and local chemical sensing. The remote systems are gas imagers that employ a fiber-pumped continuous-wave optical parametric oscillator or a microlaser-pumped, diode-seeded opt...... hiện toàn bộ
Intensity stabilisation of an argon laser using an electro-optic modulator —Performance and limitations
Applied Physics B - Tập 39 - Trang 149-153 - 1986
An intensity-stabilisation system for an argon laser using an electro-optic modulator is described. We achieved a degree of stabilisation of up to 40 dB (factor of 100) for intensity fluctuations below a few kHz. The performance in this frequency range did not reach that expected from the available loop gain. We have identified two serious limiting factors to the performance of our system at low f...... hiện toàn bộ
Sensitive measurements of stable carbon isotopes of CO2 with wavelength modulation spectroscopy near 2 μm
Applied Physics B - Tập 105 - Trang 463-469 - 2011
We performed highly sensitive measurements of stable carbon isotopes of CO2 using wavelength modulation spectroscopy with a distributed feedback laser diode in the 2-μm wavelength range. Ro-vibrational transitions, which belong to the different combination bands, were selected to measure the 13CO2/12CO2 carbon isotope ratio. The δ
13C value was determined through the signal...... hiện toàn bộ
Narrow linewidth single laser source system for onboard atom interferometry
Applied Physics B - - 2014
A compact and robust laser system for atom interferometry based on a frequency-doubled telecom laser is presented. Thanks to the original stabilization architecture on a saturated absorption setup, we obtain a frequency agile laser system allowing fast tuning of the laser frequency over 1 GHz in few ms using a single laser source. The different laser frequencies used for atom interferometry are ge...... hiện toàn bộ
Tổng số: 7,460
- 1
- 2
- 3
- 4
- 5
- 6
- 10