Characteristics of formation of a signal pulse in the field of a short high-power pump pulse for a double resonance in a system with a common upper level

1986 ◽  
Vol 16 (4) ◽  
pp. 464-471
Author(s):  
A E Dmitriev ◽  
O M Parshkov
Keyword(s):  
Pump Pulse ◽  
High Power ◽  
Double Resonance ◽  
Signal Pulse ◽  
Upper Level

scholarly journals Effects of pump pulse energy and repetition rate on beam quality in a high-power mid-infrared ZnGeP2 OPO

2020 ◽  
Author(s):  
Marcin Piotrowski ◽  
Manuel Medina ◽  
Martin Schellhorn ◽  
Gerhard Spindler ◽  
Anne DHOLLANDE
Keyword(s):  
Pump Pulse ◽  
High Power ◽  
Pulse Energy ◽  
Repetition Rate ◽  
Beam Quality ◽  
Mid Infrared ◽  
Pump Pulse Energy

High-frequency pulsed electron–electron double resonance spectroscopy on DNA duplexes using trityl tags and shaped microwave pulses

2018 ◽  
Vol 20 (41) ◽  
pp. 26140-26144 ◽  
Author(s):  
A. Kuzhelev ◽  
D. Akhmetzyanov ◽  
V. Denysenkov ◽  
G. Shevelev ◽  
O. Krumkacheva ◽  
...  
Keyword(s):  
Pump Pulse ◽  
High Frequency ◽  
Double Resonance ◽  
Spin Labels ◽  
Resonance Spectroscopy ◽  
Dna Duplexes ◽  
Microwave Pulses ◽  
Double Resonance Spectroscopy

Distances between trityl spin labels attached to DNA duplexes were determined by 180 GHz and 260 GHz PELDOR spectroscopy applying broadband pump pulse at higher frequency.

scholarly journals Compression of high-power KrF laser pulse by backward Raman scattering using focused geometry

1999 ◽  
Vol 17 (2) ◽  
pp. 275-280 ◽  
Author(s):  
K. KUWAHARA ◽  
E. TAKAHASHI ◽  
Y. MATSUMOTO ◽  
Y. OWADANO
Keyword(s):  
Refractive Index ◽  
Laser Pulse ◽  
Pump Pulse ◽  
High Power ◽  
Nonlinear Refractive Index ◽  
Scattered Light ◽  
High Energy ◽  
Focal Region ◽  
Pulse Amplification ◽  
Raman Cell

We are working on the generation of the high-power UV pulse by backward Raman pulse amplification. This report deals with the generation of the high-power backward first Stokes light using a simple focusing geometry. The high-power Stokes light, which grows from spontaneous scattered light in the focal region, can be obtained by focusing the high-energy KrF pump pulse into a Raman cell filled with methane gas. The intensity of the pump pulse increases significantly near the focus. This pulse produces a serious effect of the nonlinear refractive index. We mixed xenon gas into the Raman medium to compensate for this effect. As a result, a stable generation of the high-power single backward first Stokes light can be obtained.

High Power THz Generation Using Tilted Pulse Fronts with Low Pump Pulse Energies

2021 ◽  
Author(s):  
F. Wulf ◽  
T. Vogel ◽  
S. Mansourzadeh ◽  
M. Hoffmann ◽  
C. J. Saraceno
Keyword(s):  
Pump Pulse ◽  
High Power ◽  
Thz Generation ◽  
Pulse Energies

Three-Dimensional Atomic Spectra in Flames Using Stepwise Excitation Laser-Enhanced Ionization Spectroscopy

1986 ◽  
Vol 40 (8) ◽  
pp. 1146-1152 ◽  
Author(s):  
G. C. Turk ◽  
F. C. Ruegg ◽  
J. C. Travis ◽  
J. R. Devoe
Keyword(s):  
Double Resonance ◽  
Three Dimensional ◽  
High Rate ◽  
Second Step ◽  
Ionization Signal ◽  
Excitation Laser ◽  
Computer Controlled ◽  
Upper Level ◽  
Step Transition ◽  
Collisional Ionization

Stepwise excitation laser-enhanced ionization spectroscopy utilizes two independently tunable dye lasers to populate high-lying excited states of atoms in flames. Two atomic resonances are required, with the upper level of the first-step transition coinciding with the lower level of the second-step transition. Efficient population of a high-lying atomic level is achieved, from which a high rate of collisional ionization can take place. The double-resonance aspect of such excitation adds an extra dimension of spectroscopic selectivity to the measurement. A computer-controlled dual-wavelength LEI spectrometer, including a Fizeau wave-meter for wavelength verification, is used to record three-dimensional spectra–ionization signal as a function of both first- and second-step wavelengths. Examples illustrate the accuracy advantage accorded by the three-dimensional survey.

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