Emission Properties of Two-Photon Pumped InSb Laser under Magnetic Field

Abstract

The magnetic tuning characteristics of InSb laser pumped by a TE CO2. laser were studied.The tuning characteristic depended on the carrier density of n-InSb sample. For a sample with low carrier density, the emission energy shifted monotonously to higher energy with increasingmagnetic field and only one linear shift varying as Δε=(\hbarωc-|gc|βH)/2 was o bserved at a high magnetic field. For a sample with high carrier density, the emission energy shifted to lower energy at a low magnetic field, and at a high magnetic field two linear shifts with differentrates to higher energy varying as Δε=(\hbarωc±|gc|βH)/2 were observed. The polarization and the intensity of emission were also investigated. The zero-field emission energy was measured for samples with different carrier densities. A simple transition model is proposed, which can explain the observed magnetic tuning characteristics.

Multiphoton Absorbing Materials: Molecular Designs, Characterizations, and Applications

“…In practice, the earliest two-photon pumped (2PP) lasing was observed during the 1960s−1970s in several semiconductor crystals operating at low temperature. − Also, there were a few papers reporting two-photon excited stimulated emission in gas and metal vapor systems during the 1970s−1990s. − On the other hand, between the 1970s and 1993, there were several experimental reports on two-photon excited stimulated emission for commercial organic dye systems. − In these cases with no cavity enhancement, most of the observed output was the so-called amplified spontaneous emission (ASE) that usually was only characterized by spectral narrowing, not by high directionality. In 1995, He et al reported 2PP cavity lasing with a narrow spectral line width and high directionality for solutions of a novel dye and for doped solid matrixes …”

“…In practice, the earliest two-photon pumped (2PP) lasing was observed during the 1960s-1970s in several semiconductor crystals operating at low temperature. [380][381][382][383][384] Also, there were a few papers reporting two-photon excited stimulated emission in gas and metal vapor systems during the 1970s-1990s. [385][386][387][388][389][390] On the other hand, between the 1970s and 1993, there were several experimental reports on two-photon excited stimulated emission for commercial organic dye systems.…”

Solid‐State Electrochemical Study of In‐Sb Liquid Alloys

“…It has been employed in this capacity by a number of workers (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) because it is chemically compatible with SiC and can be obtained in single-crystal form in ultrahigh purities at reasonable cost. It has been employed in this capacity by a number of workers (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) because it is chemically compatible with SiC and can be obtained in single-crystal form in ultrahigh purities at reasonable cost.…”

Nonlinear Saturation and Lasing Characteristics of Green Fluorescent Protein

“…There are two major mechanisms that primarily responsible for this phenomenon. One is based on sequential stepwise multiphoton excitation in materials such as rare-earth doped crystals, inorganic glasses and optical fibers. − The second process is initiated by a direct simultaneous two-photon absorption and subsequent population inversion and has been observed in semiconductor and rare earth crystals, − dye solutions, and dye-doped solid matrixes. − In this work, the two-photon induced population inversion of GFP is further investigated and the characteristics of the ultrafast two-photon pumped lasing of GFP are presented. Parameters such as the spectral output, laser threshold and output-input energy characteristics are given and compared to theoretical results.…”

“…One is based on sequential stepwise multiphoton excitation in materials such as rare-earth doped crystals, inorganic glasses and optical fibers. [10][11][12][13][14][15][16][17][18] The second process is initiated by a direct simultaneous two-photon absorption and subsequent population inversion and has been observed in semiconductor and rare earth crystals, [19][20][21][22] dye solutions, and dye-doped solid matrixes. [23][24][25][26][27][28][29] In this work, the two-photon induced population inversion of GFP is further investigated and the characteristics of the ultrafast two-photon pumped lasing of GFP are presented.…”