Femtosecond-laser-encoded distributed-feedback color center laser in lithium fluoride single crystals
- 14 January 2004
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (3) , 311-313
- https://doi.org/10.1063/1.1640784
Abstract
Laser-active centers were produced in lithium fluoride (LiF) at a concentration of by irradiating focused femtosecond (fs) laser pulses from a mode-locked titanium sapphire laser (wavelength emission pulse duration This technique was used to write waveguides embedded in LiF crystals. A refractive index change estimated from a guide propagation method was approximately at a wavelength of 633 nm. Refractive index-modulated volume-type gratings were also encoded inside LiF crystals by a single interfered fs laser pulse. The distributed feedback laser structure was fabricated using the gratings thus encoded, which exhibited a room-temperature -color center laser oscillation at 707 nm. This demonstrates a DFB color center laser operating at room temperature utilizing photon written, permanent Bragg gratings.
Keywords
This publication has 15 references indexed in Scilit:
- Holographic writing of volume-type microgratings in silica glass by a single chirped laser pulseApplied Physics Letters, 2002
- New adjustment technique for time coincidence of femtosecond laser pulses using third harmonic generation in air and its application to holograph encoding systemReview of Scientific Instruments, 2002
- Periodic nanostructure array in crossed holographic gratings on silica glass by two interfered infrared-femtosecond laser pulsesApplied Physics Letters, 2001
- Holographic encoding of fine-pitched micrograting structures in amorphous SiO2 thin films on silicon by a single femtosecond laser pulseApplied Physics Letters, 2001
- Holographic Encoding of Permanent Gratings Embedded in Diamond by Two Beam Interference of a Single Femtosecond Near-Infrared Laser PulseJapanese Journal of Applied Physics, 2000
- Optical characterization of low-energy electron-beam-colored LiF crystals by spectral transmittance measurementsJournal of Applied Physics, 1999
- Ultrafast-laser driven micro-explosions in transparent materialsApplied Physics Letters, 1997
- The two-step creation and tunable laser operation of F+3 centers in LiF crystalsOptics Communications, 1989
- Double stimulated emission of mixed color centers in AN LiF crystalOptics Communications, 1985
- Room temperature visible distributed-feedback colour centre laserJournal of Physics D: Applied Physics, 1983