An intracavity laser spectrometer equipped with a graphite furnace electrothermal atomizer and two alternative types of narrow atomic lines detection schemes (high resolution diffraction spectrograph with optical multichannel analyzer or a resonant detector based on a hollow-cathode lamp) is described. Such system was used to determine ultra-trace amounts of lithium and strontium in aqueous solutions. A significant reduction in the measurable absorbance was demonstrated for both elements. Careful optimization of the operating conditions of the detection systems and a comparison of their typical features and advantages were performed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s0021663550883 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tunable Multisoliton State Ultrafast Fiber Laser Based on NiSe and Generation of Vector Dual-Wavelength Solitons.
ACS Appl Mater Interfaces
January 2025
College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University, Lin'an 311300, China.
As a member of the chalcogenide family, NiSe exhibits a direct bandgap of 1.74 eV, making it a promising candidate for nonlinear optical devices. However, its potential in the near-infrared region of the telecommunication band has not been fully explored.
View Article and Find Full Text PDFTheoretical model of passive mode-locking in terahertz quantum cascade lasers with distributed saturable absorbers.
Nanophotonics
April 2024
TUM School of Computation, Information and Technology, Technical University of Munich (TUM), D-85748 Garching, Germany.
In research and engineering, short laser pulses are fundamental for metrology and communication. The generation of pulses by passive mode-locking is especially desirable due to the compact setup dimensions, without the need for active modulation requiring dedicated external circuitry. However, well-established models do not cover regular self-pulsing in gain media that recover faster than the cavity round trip time.
View Article and Find Full Text PDFWe demonstrated a dispersion-managed 2 µm ultrafast laser based on Tm:ZBLAN fiber. By controlling intracavity net dispersion using passive fibers, we observed soliton, stretched-pulse, and dissipative-soliton mode-locked operations. In particular, the broadest output spectrum with a bandwidth at 30 dB below the peak of 320 nm and a pulse duration of 61 fs were obtained at a net dispersion of -0.
View Article and Find Full Text PDFA compact Nd:YVO/Cr:YAG passively Q-switched laser in a near-hemispherical resonator is exploited to realize high-peak-power pulsed beams with high spatial degrees of freedom. Beneficial from the advantages of strong intracavity beam focusing as well as the point-like excitation condition for the proposed cavity design, various high-order structured pulses as coherent superpositions of multiple degenerate eigenmodes are stably generated under different off-axis pump schemes. Besides, by employing external-cavity astigmatic mode conversion (AMC), the oval-shaped and chessboard-like structured pulses under on-axis and 1D off-axis pumping are transformed into exotic modes with polygonal and figure-eight-shaped envelopes to further enrich the spatial complexity of the generated fields.
View Article and Find Full Text PDFThis paper reports a 3.8 µm pulse burst self-optical parametric oscillator (SOPO) employing the Nd:MgO:PPLN crystal, achieving programmable mid-infrared pulse burst output based on step-active Q-switching technology. Building on the intracavity optical parametric oscillator (IOPO) theory, a theoretical model for the step-active Q-switched self-optical parametric oscillator is developed by introducing idler photon and step loss terms.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!