The generation of high pulse and average power radiation in eye-safe spectral region by the third stokes generation in barium nitrate Raman laser

2008 ◽  
Vol 281 (8) ◽  
pp. 2227-2232 ◽  
Author(s):  
V.A. Lisinetskii ◽  
H.J. Eichler ◽  
H. Rhee ◽  
X. Wang ◽  
V.A. Orlovich
Keyword(s):  
Spectral Region ◽  
Average Power ◽  
Raman Laser ◽  
Barium Nitrate ◽  
The Third ◽  
High Pulse ◽  
Power Radiation ◽  
Stokes Generation

High average power generation in barium nitrate Raman laser

2009 ◽  
Vol 99 (1-2) ◽  
pp. 127-134 ◽  
Author(s):  
V. A. Lisinetskii ◽  
T. Riesbeck ◽  
H. Rhee ◽  
H. J. Eichler ◽  
V. A. Orlovich
Keyword(s):  
Power Generation ◽  
Average Power ◽  
Raman Laser ◽  
Barium Nitrate ◽  
High Average Power

scholarly journals Raman Laser with a Singly Resonant Cavity: Theoretical Model and Experiment

2018 ◽  
Vol 28 (4) ◽  
pp. 287
Author(s):  
Sergei Viktorovich Voitikov ◽  
Ruslan Chulkov ◽  
Vasyli Markevich ◽  
Valentin Orlovich ◽  
Do Quoc Khanh ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Reasonable Agreement ◽  
Wave Equations ◽  
Resonant Cavity ◽  
Raman Laser ◽  
Barium Nitrate ◽  
Energy Characteristics ◽  
Time Dynamics ◽  
Pulse Pump ◽  
Stokes Generation

A semiclassical theoretical model of a Raman laser possessing a cavity which is resonant at the Stokes wavelength and not resonant at the pump wavelength has been developed. The wave equations describing evolution of amplitudes of the pump and Stokes pulses in the Raman cavity have been derived. Results of the theoretical modeling have been analyzed for conditions of an experiment with the Raman laser on barium nitrate crystal under the nanosecond pulse pump. Numerically calculated energy characteristics of the Raman laser as well as space-time dynamics of the Stokes generation have been demonstrated to be in reasonable agreement with the experiment.

Tunable Raman laser based on the third Stokes component of liquid nitrogen

1977 ◽  
Vol 7 (9) ◽  
pp. 1155-1156 ◽  
Author(s):  
S V Efimovskiĭ ◽  
I G Zubarev ◽  
A V Kotov
Keyword(s):  
Liquid Nitrogen ◽  
Raman Laser ◽  
Stokes Component ◽  
The Third

Second-Stokes generation in diode-side-pumped Nd:Gd3Ga5O12/BaWO4 Raman laser

2013 ◽  
Vol 301-302 ◽  
pp. 52-55
Author(s):  
Hongbin Shen ◽  
Qingpu Wang ◽  
Xingyu Zhang ◽  
Zhaojun Liu ◽  
Xiaohan Chen ◽  
...  
Keyword(s):  
Raman Laser ◽  
Stokes Generation

External-cavity diamond Raman laser performance at 1240 nm and 1485 nm wavelengths with high pulse energy

2016 ◽  
Vol 13 (6) ◽  
pp. 065001 ◽  
Author(s):  
V P Pashinin ◽  
V G Ralchenko ◽  
A P Bolshakov ◽  
E E Ashkinazi ◽  
M A Gorbashova ◽  
...  
Keyword(s):  
Pulse Energy ◽  
External Cavity ◽  
Raman Laser ◽  
High Pulse Energy ◽  
Laser Performance ◽  
High Pulse

An efficient high pulse energy and high average power cryogenic gas cooled multi-slab Yb:YAG amplifier

2012 ◽  
Author(s):  
P. D. Mason ◽  
K. Ertel ◽  
S. Banerjee ◽  
P. J. Phillips ◽  
C. Hernandez-Gomez ◽  
...  
Keyword(s):  
Pulse Energy ◽  
Average Power ◽  
High Pulse Energy ◽  
High Average Power ◽  
High Pulse

scholarly journals Developments of Space Debris Laser Ranging Technology Including the Applications of Picosecond Lasers

2021 ◽  
Vol 11 (21) ◽  
pp. 10080
Author(s):  
Haifeng Zhang ◽  
Mingliang Long ◽  
Huarong Deng ◽  
Shaoyu Cheng ◽  
Zhibo Wu ◽  
...  
Keyword(s):  
Space Debris ◽  
New Technologies ◽  
Pulse Repetition Frequency ◽  
Average Power ◽  
Picosecond Laser ◽  
Laser Ranging ◽  
Telescope Array ◽  
High Pulse ◽  
First Time ◽  
532 Nm

Debris laser ranging (DLR) is receiving considerable attention as an accurate and effective method of determining and predicting the orbits of space debris. This paper reports some technologies of DLR, such as the high pulse repetition frequency (PRF) laser pulse, large-aperture telescope, telescope array, multi-static stations receiving signals. DLR with a picosecond laser at the Shanghai Astronomical Observatory is also presented. A few hundred laps of space debris laser-ranging measurements have been made. A double-pulse picosecond laser with an average power of 4.2 W, a PRF of 1 kHz, and a wavelength of 532 nm has been implemented successfully in DLR, it’s the first time that DLR technology has reached a ranging precision at the sub-decimeter level. In addition, the characteristics of the picosecond-pulse-width laser transmission with the advantages of transmission in laser ranging were analyzed. With a mode of the pulse-burst picosecond laser having high average power, the DLR system has tracked small debris with a radar cross-section (RCS) of 0.91 m2 at a ranging distance up to 1726.8 km, corresponding to an RCS of 0.1 m2 at a distance of 1000 km. These works are expected to provide new technologies to further improve the performance of DLR.

Technology of thin-rod Yb : YAG amplifiers with a high pulse energy and average power

2020 ◽  
Vol 50 (4) ◽  
pp. 327-330
Author(s):  
I I Kuznetsov ◽  
S A Chizhov ◽  
I B Mukhin ◽  
O V Palashov
Keyword(s):  
Pulse Energy ◽  
Average Power ◽  
High Pulse Energy ◽  
High Pulse

Standard of Purity for Cholesterol

1963 ◽  
Vol 9 (2) ◽  
pp. 121-134 ◽  
Author(s):  
Nathan Radin ◽  
Adalbert L Gramza
Keyword(s):  
Acetic Acid ◽  
Sulfuric Acid ◽  
Ethyl Alcohol ◽  
Spectral Region ◽  
Glacial Acetic Acid ◽  
Absolute Ethyl Alcohol ◽  
The Third ◽  
Derivative Method ◽  
Ultraviolet Spectral Region ◽  
Lower Limits

Abstract Three recrystallization technics were used to fractionate five commercial cholesterol products and one artificial mixture. One technic involved the recrystallization of cholesterol from absolute ethyl alcohol, the second technic involved the recrystallization of cholesterol from glacial acetic acid, and the third technic used the dibromide derivative method. The molar absorptivities for the various crystal batches were in the range of 1610 to 1750 L. mole-1 cm.-1 at 620 mµ with a modified Liebermann-Burchard procedure. The molar absorptivities were in the range of 9,800 to 11,500 L. mole-1 cm.-1 at 560 mµ with a modified sulfuric acid-iron method. The original products and the ethyl alcohol recrystallized products showed molar absorptivities at the lower limits of the ranges, while the glacial acetic acid and dibromide derivative recrystallized cholesterol showed molar absorptivities at the higher limits of the ranges. Absorption peaks at 235 mµ for methyl alcohol solutions of the cholesterol preparations were used to estimate cholesterol impurities on the basis of 7-keto cholesterol acetate absorption values. The decrease of absorption in the ultraviolet spectral region established that impurities were removed from the cholesterol preparations studied.

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