Desenvolvimento de um laser de Nd:YLF bombeado por diodo laser e duplicado em frequencia para 657 nm / Development of a diode pumped Nd:YLF laser, frency doubled to 657 nm

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Atomic clocks are used today in a number of scientific and technological applications, ranging from tests of relativity, or variations of fundamental constants, to the use in navigation and telecommunication. The next generation of such high precision devices will be based on optical transitions of suitable laser cooled and trapped atoms. In this work we describe a frequency-doubled, diode-pumped solid-state Nd:YLF ring laser emitting at 657 nm, proposed as a local oscillator in an optical atomic clock based on laser cooled and trapped calcium atoms. Compared to diode lasers, its main advantages include higher power, less intrinsic frequency noise, and the possibility of remote transfer in optical fibers using the fundamental light at 1314 nm. Frequency doubling is performed inside the cavity using a 10 mm long AR-coated BiBO crystal, under type I, critical phase-matching at room temperature. Red output power of 270 mW was achieved for 11.6 W of pumping power

ASSUNTO(S)

optical atomic clock second harmonic generation solid-state lasers lasers de estado sólido relogio atomico otico geração de segundo harmonico

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