Photonic Crystal Microchip Laser.
The microchip lasers, being very compact and efficient sources of coherent light, suffer from one serious drawback: low spatial quality of the beam strongly reducing the brightness of emitted radiation. Attempts to improve the beam quality, such as pump-beam guiding, external feedback, either strongly reduce the emission power, or drastically increase the size and complexity of the lasers. Here it is proposed that specially designed photonic crystal in the cavity of a microchip laser, can significantly improve the beam quality. Experiments show that a microchip laser, due to spatial filtering functionality of intracavity photonic crystal, improves the beam quality factor M2reducing it by a factor of 2, and increase the brightness of radiation by a factor of 3. This comprises a new kind of laser, the "photonic crystal microchip laser", a very compact and efficient light source emitting high spatial quality high brightness radiation.
Laser Research Center, Department of Quantum Electronics, Vilnius University, Sauletekio Ave. 10, LT-10222, Vilnius, Lithuania.
Darius
D
Gailevicius
International center "Institute of Applied Optics" NAS of Ukraine, Kudryavskaya Str. 10G, 04053, Kyiv, Ukraine.
Volodymyr
V
Koliadenko
Laser Research Center, Department of Quantum Electronics, Vilnius University, Sauletekio Ave. 10, LT-10222, Vilnius, Lithuania.
Vytautas
V
Purlys
Laser Research Center, Department of Quantum Electronics, Vilnius University, Sauletekio Ave. 10, LT-10222, Vilnius, Lithuania.
Martynas
M
Peckus
International center "Institute of Applied Optics" NAS of Ukraine, Kudryavskaya Str. 10G, 04053, Kyiv, Ukraine.
Victor
V
Taranenko
Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Colom 11, 08222 Terrassa, Spain.|Institucio Catalana de Reserca i Estudis Avançats (ICREA), passeig Lluis Companys 23, 08010 Barcelona, Spain.
Kestutis
K
Staliunas
Opt Express. 2014 Mar 10;22(5):5177-82
24663857
Phys Rev Lett. 2005 Feb 25;94(7):073903
15783818
Nature. 2003 Nov 27;426(6965):404
14647372
Nature. 2003 Jun 5;423(6940):604-5
12789328
Opt Lett. 2003 Jul 1;28(13):1135-7
12879932
Opt Lett. 2014 Feb 15;39(4):929-32
24562244
Opt Express. 2008 Jul 7;16(14):10841-8
18607500
Science. 2005 Apr 22;308(5721):534-7
15845849
Phys Rev A. 1996 Dec;54(6):5386-5393
9914109