Femtosecond kinetics of reflection of mirrors with saturable absorption

被引：1

作者：

Borisov G.M. ^{[1
,2
]}

Gol’dort V.G. ^{[1
]}

Kovalyov A.A. ^{[1
]}

Ledovskikh D.V. ^{[1
]}

Rubtsova N.N. ^{[1
]}

机构：

[1] Rzhanov Institute of Semiconductor Physics, Siberian branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 13, Novosibirsk

[2] Novosibirsk State University, ul. Pirogova 2, Novosibirsk

来源：

Optoelectronics, Instrumentation and Data Processing | 2016年 / 52卷 / 02期

关键词：

passive mode locking; quantum wells; saturable absorption; semiconductor mirrors;

D O I：

10.3103/S8756699016020060

中图分类号：

学科分类号：

摘要：

The kinetics of mirrors with saturable absorption is investigated by a pump-probe singlefrequency technique in reflection of femtosecond pulse radiation with the central wavelength of 1040 nm. The double modulation method with probe radiation detection at the summary frequency allows suppressing the scattered pump radiation contribution and reaching the reflection change sensitivity at a level of 10−5. The kinetics of recovery of the linear reflectivity of the mirror including resonant quantum wells with nanostructured barriers is studied for the surface density of photons in pump pulses of (0.3–5.8) · 1014 cm−2. The time of electron-hole recombination (7.8 ps) is found to be appreciably shorter than in samples with quantum wells separated by thick barriers; the time of ionization of excitons localized in quantum wells (0.2–0.4 ps) increases with the pump intensity. © 2016, Allerton Press, Inc.

引用

页码：148 / 152

页数：4

共 6 条

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