The development of laser technologies leads to high requirements for lasers being developed which generate narrow-band radiation with different wavelengths. In view of this, the importance of wavelength-tunable diode and vibronic lasers with broadband amplification circuits increases. The possibility of generating highly coherent radiation in a solid-state alexandrite laser using an original composite resonator which includes an additional external dispersive resonator has been demonstrated. The results of experimental studies of conditions for the generation of narrow-band (less than 20 pm) radiation in such a resonator with the possibility of smooth tuning of the lasing wavelength in the spectral range 740–780 nm are presented. Narrow-band lasing in an alexandrite laser with a radiation energy of 30 mJ and a pulse duration of 35 ns was demonstrated. The created compact narrow-band alexandrite laser can be an effective alternative to parametric oscillators (OPO) and Ti:Sapphire lasers in lidar systems operating in the spectral range 700–850 nm.
alexandrite laser, dispersive resonator, coherent radiation, short pulse
1. Kiefer J., Zhou Bo, Zetterberg J., Li Z., Alden M. Laser-induced fluorescence detection of hot molecular oxygen in flames using an alexandrite laser // Appl. Spectrosс. 2014. V. 68, N 11. P. 1266–1273.
2. Wulfmeyer V., Bosenberg J., Lehmann S., Senff C. Injection-seeded alexandrite ring laser: Performance and application in a water-vapor differential absorption lidar // Opt. Lett. 1995. V. 20, N 6. P. 638–640.
3. Walling J.C., Peterson O.G., Jenssen H.P., Morris R.C., O’dell E.W. Tunable alexandrite lasers // IEEE J. Quant. Electron. 1980. V. 16, N 12. P. 1302–1315.
4. Imai Sh., Yamada T., Fujimori Y., Ishikawa K. Third-harmonic generation of an alexandrite laser in b–BaB2O4 // Appl. Phys. Lett. 1989. V. 54, N 13. P. 1206–1208.
5. Antsiferov V.V., Ivanov E.V. Moshchnyi odnochastotnyi lazer na aleksandrite s passivnoi modulyatsiei dobrotnosti zatvorami na kristallakh F3–:LiF, s plavnoi perestroikoi i stabilizatsiei dliny volny generatsii. Novosibirsk: IYAF SO RAN im. G.I. Budkera, 1999. P. 99–40.
6. Tyryshkin I.S., Ivanov N.A., Khulugurov V.M. Uzkopolosnyi perestraivaemyi lazer na aleksandrite s passivnoi modulyatsiei dobrotnosti // Kvant. elektron. 1998. V. 25, N 6. P. 505–506.
7. Opticheskii sostavnoi rezonator dlya tverdotel'nykh i diodnykh lazerov: Pat. 217510 U1. Russia. MPK H01S 3/082. Panchenko Yu.N., Puchikin A.V., Andreev M.V.; FGBUN ISE SO RAN. N 2022133091; Zayavl. 15.12.2022; Opubl. 04.04.2023. Byul. N 10.
8. Anokhov S.P., Marusii T.Ya., Soskin M.S. Perestraivaemye lazery. M.: Radio i svyaz', 1982. 360 p.