Experimental Guide for Compact Bow-Tie Femtosecond Solid-State Laser Development

Autor(es)

Pinto, Vinicius Pereira ; Nogueira, Giovana Trevisan ; Yasuoka, Fatima Maria Mitsue ; Neto, Jarbas Caiado de Castro

• Tipo de documento: Artigo Científico
• Fonte: PHOTONICS; v. 12, n. 6, p. 19-pg., 2025-05-29.

Resumo

Bow-tie cavity configurations have gained significant attention due to their efficacy in facilitating stable resonator operation for applications requiring short pulse operation and high repetition rate pulses, offering versatility and reliability. While there is an extensive body of literature addressing the theoretical aspects and applications of this laser configuration, there exists a gap in practical insights and systematic approaches guidance pertaining to the development and precision alignment of this laser type. The paper achieves this by compiling a range of analytical and optimization techniques for the bow-tie cavity configuration and delineating the necessary steps for the optimization required for continuous wave operation. This ultimately leads to the attainment of the pulsed regime through the Kerr Lens Mode-locking technique, offering a detailed account of the development, optimization, and performance evaluation of a Ti:Sapphire femtosecond laser cavity, using dispersion-compensating mirrors to produce a low-energy pulse of 1 nJ, a high repetition rate of 1 GHz, and a short pulse duration of 61 fs. This work can be useful for researchers and engineers seeking to embark on the development of compact and high-performance femtosecond lasers for a spectrum of applications, encompassing biomedical imaging, laser-assisted surgery, spectroscopy, and optical frequency combs. (AU)

• Processo FAPESP: 13/07276-1 - CEPOF - Centro de Pesquisa em Óptica e Fotônica
• Beneficiário: Vanderlei Salvador Bagnato
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 15/15990-1 - Desenvolvimento de um sistema de gravação e marcação colorida a laser de Ti:safira pulsado fentosegundos através da formação de nanoestruturas (ripples) na superfície de diferentes materiais
• Beneficiário: Fatima Maria Mitsue Yasuoka
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisa Inovativa em Pequenas Empresas - PIPE
• Processo FAPESP: 21/08202-8 - Otimização da cavidade em anel de ti: Safira femtossegundos utilizando tecnologia chirped mirror coating
• Beneficiário: Vinícius Pereira Pinto
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica