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Optically pumped mirrorless lasing. A review. 
Part I. Random lasing 

Nastishin Yu. A. and Dudok T. H. 

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Abstract. Currently optically pumped mirrorless lasing is represented by three distinct branches, which concern lasing in different types of the gain media: optically random and photonic media, and microcavities. This article is a first part of our review on optically pumped mirrorless lasing, with the random lasing in scattering media being a main subject. The other mirrorless lasing mechanisms will be addressed in the second part. Considering light localization as a key function of the feedback, we discuss possible mechanisms for the light localization in the scattering media. Special attention is paid to the Anderson light localization. The other mechanisms of the light localization in the scattering media concern high Q-resonances in local microresonators, which exist due to structural inhomogeneities in the scattered media. Applications of the random lasers are shortly reviewed.

Keywords: mirrorless lasing, mirrorless lasers, random lasing, random lasers, light localization, optical feedback, amplified spontaneous emission, superfluorescence, superrradiance
 

PACS: 42.55.Zz; 42.55.Sa; 42.55.Tv; 42.60.Da; 42.55.Mv; 42.70.Hj; 42.25.Dd/
UDC: 535.37+535.35+681.7.069.24+52-626
Ukr. J. Phys. Opt. 14 146-170
doi: 10.3116/16091833/14/3/146/2013
Received: 27.06.2013

Анотація. На даний час бездзеркальна лазерна генерація з оптичним нагнітанням представлена трьома окремими напрямами, які стосуються лазерної генерації активних середовищ різних типів: оптично випадкових середовищах, фотонних середовищах і мікрорезонаторах. Ця стаття є першою частиною огляду літератури з бездзеркальної лазерної генерації з оптичним нагнітанням. Її предмет – випадкова лазерна генерація в розсіювальних середовищах. Інші механізми бездзеркальної лазерної генерації буде обговорено в другій частині огляду. Розглядаючи локалізацію світла як ключову функцію зворотного зв’язку, ми з’ясовуємо можливі механізми локалізації світла в розсіювальних середовищах. Особливу увагу надано локалізації світла за Андерсоном. Інші механізми локалізації світла в розсіювальних середовищах стосуються високодобротних резонансів в локальних мікрорезонаторах, що існують за рахунок неоднорідності розсіювального середовища. Коротко розглянуто застосування випадкових лазерів.
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