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

Journal of the Optical Society of America B

Control of nonlinear absorption and amplification of light in Er^3+-doped fluoroindate glass

Glauco S. Maciel, Nikifor Rakov, Cid Bartolomeu de Araujo, Younès Messaddeq

Published Nov 1, 1999• 8 citations
Publisher

Abstract

Nonlinear absorption and amplification of a probe laser beam can be controlled by adjustment of the intensity-modulation frequency and the wavelength of a pump laser beam. A demonstration of this effect in Er3+-doped fluoroindate glass is presented. The results show maximum amplification of the probe beam (∼12%) when a pump laser emitting 16 mW of power is modulated at ∼30 Hz. In the limit of low modulation frequencies, or cw pumping, induced absorption of the probe beam is the dominant nonlinear process.

DOI
10.1364/josab.16.001995

Related papers

Nonlinear absorption and amplification of light in Er3+-doped fluoroindate glass

Glauco S. Maciel, Nikifor Rakov, Cid Bartolomeu de Araujo +1 more

Nonlinear absorption and amplification of a probe laser beam can be controlled by adjusting the intensity modulation frequency and wavelength of a pump laser beam. The demonstration of this effect in Er3+-doped fluoroindate glass is presented.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jul 19, 1999•0 citations

Optical amplification in Er3+-doped transparent Ba2NaNb5O15 single crystal at 850 nm

Patricia Haro‐González, Inocencio Rafael Martin, F.J. Lahoz +3 more

Positive optical gain around 5 cm−1 (∼21 dB/cm) has been observed in Er3+-doped Ba2NaNb5O15 single crystal using a pump and probe experimental setup. High power laser pulses at 532 nm have been used as the pump source in order to strongly populate the S43/2(H211/2) levels of the Er3+ ions due to ground state absorption. Low signal beam cw laser radiation at 850 nm has been used as the probe beam to stimulate the emission associated with the S43/2(H211/2)→I413/2 electronic transition of the Er3+ ions. The process has been modelized as a four level system, and its population has been analyzed and simulated in order to study the gain dynamics. Optical amplification of the probe signal has been observed during the first 60 μs, which represents a good agreement between the measured lifetime of the S43/2(H211/2) levels and the reported simulation.

Journal of Applied Physics•Dec 1, 2009•8 citations

Optical Bistability and Negative Nonlinear Absorption Effect at 1.5 .MU.m in Highly Er3+-Doped Glasses.

Yoshinobu Maeda, Akio Konishi, Hidekazu Hashima +1 more

The dependence of the negative nonlinear absorption effect at 1.5μm on the sample temperature, the modulation frequency and the sample length were investigated in glasses containing amounts higher than 20mol% Er3+. Reversed-phase waveforms were observed in the temperature range -260-600°C and at modulation frequencies from 1kHz to 10GHz in an erbium-doped phosphate glass. With increasing temperature, the amplitude of the reversed-phase waveforms decreases exponentially according to two separate steps. Optical bistability in the transmitted laser was observed in the range of incident laser intensity of 30μW/cm2-2.4mW/cm2. The transmitted laser intensity propagating through the glass decreased exponentially according to the well-known exponential law. However, the amplitude of the optical bistability increased logarithmically as the sample length was increased. The negative nonlinear absorption effect can be explained by considering an enhanced absorption model for a four-level system of the Er3+ ion.

Journal of the Ceramic Society of Japan•Jan 1, 2000•1 citation

Tecnical efects in frequency upconversion of the Er3+ and pulse propagation in nonlinear media.

Oliveira, Jonathas Matias de

In this work, we have investigated experimentally and theoretically the process of frequency upconversion at low temperatures in rare earth doped vitreous samples. A sample of chalcogenide glass doped with erbium ions (Er3+) was pumped with a laser source at 1.54 μm. We have observed, at room temperature, three different emission bands around 530 nm, 555 nm and 670 nm, originating from the excited state erbium levels 2H11/2, 4S3/2 and 4F9/2 to the 4I15/2 ground-state, respectively. A cryogenic system cooled the sample down to 4 K, and we have recorded many spectra in this range of temperature. We have observed relative increase in the intensity of the green fluorescence, which comes from the level 4S3/2, and also the vanishing emission of the 530 nm line around 210 K. For all emission lines, the frequency upconversion process has been accounted for with three photons absorbed from the pumping source, but saturation effects were observed above 10 mW of incident power. We have made a theoretical treatment of the experimental data and a numeric simulation, which has revealed that the observed behaviors are related to processes that involve step-wise photon absorption and phonon assisted nonradiative decay, both dependent on the temperature and phonon energy of the sample. We also present, in the third chapter, an analytic treatment of pulse propagation in nonlinear media. We have used a variational approach to predict the behavior of an optical pulse propagating in the vicinity of a two-photon resonance, where the third order nonlinearities may be enhanced and limits optical devices development. A possible solution for the problem is the propagation of a pulse with suitable profile and frequency chirp resulting in a balancing of the nonlinear effects.

•Aug 12, 2002•0 citations

Controllable propagation of light pulses in Er-doped fibers with saturable absorption

Serguei I. Stepanov, Eliseo Hernández

We report controllable (slow or fast) propagation of low-intensity probe-light pulses through erbium-doped fiber periodically saturated by the synchronized master-pulse sequence. These two pulse sequences could have significantly different carrier wavelengths within the fundamental absorption spectrum 1470-1570 nm of Er(+3) ions. The effect of fractional delay or advancement grew with the fiber optical absorption at the probe wavelength and could be significantly stronger than that at the saturating wavelength. The probe-pulse advancement was observed in the case when the saturating and probe waves were modulated approximately in antiphase. The observed effects are explained in the framework of a simple model of a periodically saturated homogeneously broadened absorption line.

Optics Letters•Sep 26, 2008•13 citations

Coherent quantum control of green emission in Er3+ -doped glass by π -phase-shaped ultrashort laser pulses

Wenjing Cheng, Tianqing Jia, Xiaoying Shang +5 more

We experimentally and theoretically study the coherent quantum control of green emission in Er${}^{3+}$-doped glass by $\ensuremath{\pi}$-phase-shaped 800-nm femtosecond laser pulses. The experimental results show that the green emission intensity is enhanced over the transform-limited pulse by $\ensuremath{\pi}$-phase-shaped pulses as the laser field increases to several 10${}^{12}$ W/cm${}^{2}$. Coherent control of multiphoton absorption is studied based on the fourth-order perturbation theory, and the theoretical results accord well with the experimental observations.

Physical Review A•Feb 3, 2014•3 citations
Nonlinear absorption and amplification of a probe laser beam can be controlled by adjustment of the intensity-modulation frequency and the wavelength of a pump laser beam. A demonstration of this effect in Er3+-doped fluoroindate glass is presented. The results show maximum amplification of the probe beam (∼12%) when a pump laser emitting 16 mW of power is modulated at ∼30 Hz. In the limit of low modulation frequencies, or cw pumping, induced absorption of the probe beam is the dominant nonlinear process.
Positive optical gain around 5 cm−1 (∼21 dB/cm) has been observed in Er3+-doped Ba2NaNb5O15 single crystal using a pump and probe experimental setup. High power laser pulses at 532 nm have been used as the pump source in order to strongly populate the S43/2(H211/2) levels of the Er3+ ions due to ground state absorption. Low signal beam cw laser radiation at 850 nm has been used as the probe beam to stimulate the emission associated with the S43/2(H211/2)→I413/2 electronic transition of the Er3+ ions. The process has been modelized as a four level system, and its population has been analyzed and simulated in order to study the gain dynamics. Optical amplification of the probe signal has been observed during the first 60 μs, which represents a good agreement between the measured lifetime of the S43/2(H211/2) levels and the reported simulation.
The dependence of the negative nonlinear absorption effect at 1.5μm on the sample temperature, the modulation frequency and the sample length were investigated in glasses containing amounts higher than 20mol% Er3+. Reversed-phase waveforms were observed in the temperature range -260-600°C and at modulation frequencies from 1kHz to 10GHz in an erbium-doped phosphate glass. With increasing temperature, the amplitude of the reversed-phase waveforms decreases exponentially according to two separate steps. Optical bistability in the transmitted laser was observed in the range of incident laser intensity of 30μW/cm2-2.4mW/cm2. The transmitted laser intensity propagating through the glass decreased exponentially according to the well-known exponential law. However, the amplitude of the optical bistability increased logarithmically as the sample length was increased. The negative nonlinear absorption effect can be explained by considering an enhanced absorption model for a four-level system of the Er3+ ion.
In this work, we have investigated experimentally and theoretically the process of frequency upconversion at low temperatures in rare earth doped vitreous samples. A sample of chalcogenide glass doped with erbium ions (Er3+) was pumped with a laser source at 1.54 μm. We have observed, at room temperature, three different emission bands around 530 nm, 555 nm and 670 nm, originating from the excited state erbium levels 2H11/2, 4S3/2 and 4F9/2 to the 4I15/2 ground-state, respectively. A cryogenic system cooled the sample down to 4 K, and we have recorded many spectra in this range of temperature. We have observed relative increase in the intensity of the green fluorescence, which comes from the level 4S3/2, and also the vanishing emission of the 530 nm line around 210 K. For all emission lines, the frequency upconversion process has been accounted for with three photons absorbed from the pumping source, but saturation effects were observed above 10 mW of incident power. We have made a theoretical treatment of the experimental data and a numeric simulation, which has revealed that the observed behaviors are related to processes that involve step-wise photon absorption and phonon assisted nonradiative decay, both dependent on the temperature and phonon energy of the sample. We also present, in the third chapter, an analytic treatment of pulse propagation in nonlinear media. We have used a variational approach to predict the behavior of an optical pulse propagating in the vicinity of a two-photon resonance, where the third order nonlinearities may be enhanced and limits optical devices development. A possible solution for the problem is the propagation of a pulse with suitable profile and frequency chirp resulting in a balancing of the nonlinear effects.
We report controllable (slow or fast) propagation of low-intensity probe-light pulses through erbium-doped fiber periodically saturated by the synchronized master-pulse sequence. These two pulse sequences could have significantly different carrier wavelengths within the fundamental absorption spectrum 1470-1570 nm of Er(+3) ions. The effect of fractional delay or advancement grew with the fiber optical absorption at the probe wavelength and could be significantly stronger than that at the saturating wavelength. The probe-pulse advancement was observed in the case when the saturating and probe waves were modulated approximately in antiphase. The observed effects are explained in the framework of a simple model of a periodically saturated homogeneously broadened absorption line.
We experimentally and theoretically study the coherent quantum control of green emission in Er3+{}^{3+}3+-doped glass by $\ensuremath{\pi}$-phase-shaped 800-nm femtosecond laser pulses. The experimental results show that the green emission intensity is enhanced over the transform-limited pulse by $\ensuremath{\pi}$-phase-shaped pulses as the laser field increases to several 1012{}^{12}12 W/cm2{}^{2}2. Coherent control of multiphoton absorption is studied based on the fourth-order perturbation theory, and the theoretical results accord well with the experimental observations.