Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Acta Optica Sinica

Generation of IR stimulated radiation, UV visible violet coherent radiation by two-photon resonance pumping in K vapor

Zugeng Wang, X. L. Tang, Kiachang Zhang, Zheng Yishan

Published Jan 1, 1986• 0 citations
OpenAlex

Abstract

A series of IR stimulated and c scade stimulated radiation (ws) were detected when the 7S state of potassium was populsted by two-photon resonance excitation. Nine UV coherent radiation lines (wP) were generated through the two-photon resonant four-wave mixing wP=2wL-ws. By the second four-wave mixing process wc = wP-w's ws, a gereies of UV and violet coherent radiation were formed. The schemes for generating IR stimul ted and UV, violet coherent radiation were discussed in this paper.

Related papers

Generation of coherent UV radiation by optical wave-mixing processes in atomic potassium

P. L. Zhang, Y. C. Wang, ARTHUR L. SCHAWLOW

A pulsed dye-laser beam (ωL) pumped by a frequency-doubled Nd:YAG laser is focused into a heat-pipe oven containing potassium vapor (nk ≈ 1016 cm−3). Two-photon resonant four-wave and six-wave mixing processes using the potassium 8s 2S1/2 state are investigated. Thirty-two coherent UV radiation lines are generated within the range of 300–400 nm through the processes ωUV = 2ωL ± ωIR and ωUV = 2ωL − ω′IR − ω″IR ± ω‴IR, where ωIR are frequencies of laser-induced IR waves generated in the vapor near the transitions 8S–7P, 7P–7S, 7P–5D, 8S–6P, 7S–6P, 5D–6P, etc. The influence of resonant enhancement on the UV line intensities and the phase-matching condition are analyzed.

Journal of the Optical Society of America B•Mar 1, 1984•38 citations

TWO-PHOTON PUMPEL SIX-AND FOUR-WAVE MIXING AND STIMULATED RADIATION IN LITHIUM VAPOR

Zugeng Wang, 华东师范大学物理系,上海,200062

This paper reports the generation of the coherent and stimulated radiation in UV, visible and infrared regions by two-photon pumping. It includes the tunable coherent radiation around 1.03 μm generated by a special six-wave mixing process, the stimulated radiation at 812.6 nm generated by molecular two-photon dissociation or atomic cascade transition, coherent radiation at 323.3 nm and 670.8 nm generated by the four-wave mixings.

Acta Physica Sinica•Jan 1, 1990•0 citations

The Character Research of UV Coherent Radiation in Ca Vapor

Y Ohkn

By using two dye lasers (their output frequencies are ω_1 and ω_2, respectively)pumped by a N_2 laser UV(272.2nm) coherent radiation is generated in unequal frequency two-step or two-photon resonant four-wave mixing process ω_(UV)=ω_1+ω_2 -ω_(IR) in Ca vapor (ω_(IR) is the frequency of IR stimulated radiation).The character of excitation and radiation is researched.

Huadong Shifan Daxue xuebao. Ziran kexue ban•Jan 1, 1990•0 citations

The Character Research of UV Coherent Radiation in Ca Vapor

Ang Z

By using twe dye lasers(their output frequencies are ω_1 and ω_2,respectively) pumped by a N_2 laser UV(272.2nm)coherent radiation is generated in unequal frequency two-step or two-photon resonant four-wave mixing process ω_(UV)=ω_1+ω_2 —ω_(IR) in Ca vapor(ω_(IR) is the frequency of IR stimulated radiation).The character of excitation and radiation is researched.

•Jan 1, 1990•0 citations

Stimulated radiation of UV and violet diffuse bands by two-photon pumping covering a wide wavelength region in Na_2

Z Wang

This paper reports the generation of the stimulated radiation of UV (350.0-385.0nm) and violet (405.0-460.0nm) diffuse bands by two-photon pumping covering a wide wavelength region (620.0-670.0nm) in Na2. The processes of the excitation and emission are discussed.

Acta Optica Sinica•Jan 1, 1986•0 citations

RADIATIONS AMPLIFICATION AND IMAGE CONVERSION IN STIMULATED FOUR-WAVE PARAMETRIC MIXING IN POTASSIUM VAPOR

M. E. Movsesyan, A. Papoyan, Svetlana Shmavonyan

We report the results of experimental investigation of radiations amplification in stimulated four-wave parametric mixing in potassium vapor using two cells holding active medium (generator-amplifier system). Under the two-photon excitation on 4S→6S transition, the gain of parametrically generated violet radiation on 5P→4S transitions is caused by the amplification of infrared radiation on 6S→5P transitions due to optically pumped stimulated emission process. The optimum conditions for seed radiations amplification are found. For these conditions we realized, for the first time, an image conversion from infrared region of spectrum (3.66 µ) to violet (0.4 µ) with quantum efficiency of conversion over 100% (“brightness intensification”).

Journal of Nonlinear Optical Physics & Materials•Oct 1, 1992•6 citations
A series of IR stimulated and c scade stimulated radiation (ws) were detected when the 7S state of potassium was populsted by two-photon resonance excitation. Nine UV coherent radiation lines (wP) were generated through the two-photon resonant four-wave mixing wP=2wL-ws. By the second four-wave mixing process wc = wP-w's ws, a gereies of UV and violet coherent radiation were formed. The schemes for generating IR stimul ted and UV, violet coherent radiation were discussed in this paper.
A pulsed dye-laser beam (ωL) pumped by a frequency-doubled Nd:YAG laser is focused into a heat-pipe oven containing potassium vapor (nk ≈ 1016 cm−3). Two-photon resonant four-wave and six-wave mixing processes using the potassium 8s 2S1/2 state are investigated. Thirty-two coherent UV radiation lines are generated within the range of 300–400 nm through the processes ωUV = 2ωL ± ωIR and ωUV = 2ωL − ω′IR − ω″IR ± ω‴IR, where ωIR are frequencies of laser-induced IR waves generated in the vapor near the transitions 8S–7P, 7P–7S, 7P–5D, 8S–6P, 7S–6P, 5D–6P, etc. The influence of resonant enhancement on the UV line intensities and the phase-matching condition are analyzed.
We report the results of experimental investigation of radiations amplification in stimulated four-wave parametric mixing in potassium vapor using two cells holding active medium (generator-amplifier system). Under the two-photon excitation on 4S→6S transition, the gain of parametrically generated violet radiation on 5P→4S transitions is caused by the amplification of infrared radiation on 6S→5P transitions due to optically pumped stimulated emission process. The optimum conditions for seed radiations amplification are found. For these conditions we realized, for the first time, an image conversion from infrared region of spectrum (3.66 µ) to violet (0.4 µ) with quantum efficiency of conversion over 100% (“brightness intensification”).