Passive Q-switching of an erbium-doped glass laser by using a Co{sup 2+} : ZnSe crystal

Journal Article · Wed Oct 31 04:00:00 EDT 2007 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2007V037N10ABEH013616· OSTI ID:21466730

Il'ichev, N N; Pashinin, P P ^[1]; Shapkin, P V; Nasibov, A S ^[2]

---

1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

The operation of a passively Q-switched laser emitting the TEM{sub mn} mode is described. The excited-state absorption losses and nonlinear absorption in the shaded ends of the active element are taken into account. We measured the laser pulse energy for the TEM{sub 00} mode, the ratios of the output energy in transverse TEM{sub mn} modes with m = 0-4, n = 0 and m = 0-3, n = 1 to the TEM{sub 00} mode energy in an erbium-doped glass laser and determined its temporal parameters in the passive Q-switching regime achieved with the help of a Co{sup 2+} : ZnSe crystal. It is shown that on passing from one type of the transverse mode to another for invariable parameters of the resonator, the laser pulse energy changes discretely. A change in the radius of the transverse distribution of the TEM{sub 00} mode at the output mirror of the passively Q-switched laser during the development of lasing is estimated. It is found that the relative change in the laser beam cross section on the output mirror under our conditions is less than 2%. The experimental data obtained in the study are in good agreement with our calculations. (special issue devoted to the 25th anniversary of the a.m. prokhorov general physics institute)

• OSTI ID: 21466730
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 10 Vol. 37; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
COBALT IONS
CRYSTALS
DATA
DOPED MATERIALS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
ERBIUM
EXPERIMENTAL DATA
GLASS
INFORMATION
IONS
LASERS
MATERIALS
METALS
MIRRORS
NUMERICAL DATA
PHOTON BEAMS
Q-SWITCHING
RARE EARTHS
RESONATORS
SELENIDES
SELENIUM COMPOUNDS
ZINC COMPOUNDS
ZINC SELENIDES