Optimal operating regime of saturable absorbers in mode-locked lasers

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1982v012n01ABEH005261· OSTI ID:5506989

Narovlyanskaya, N M; Tikhonov, E A

An investigation was made of ultrashort pulse generation by passive mode locking in a rhodamine 6G jet laser with pulsed laser pumping of up to 300 nsec duration. In order to obtain single ultrashort pulses per axial period in these systems, it was essential to reduce their time of formation to several loop passes. It was shown experimentally that the rate of formation of ultrashort pulses is influenced appreciably by the nonlinear absorber dye and, for a given intracavity intensity, the best dyes are those having a purely electronic transition near the lasing frequency. In this case, the critical bleaching intensity and relaxation time are minimized as a result of the increased role of stimulated resonance transitions in the dye modulator. Optimal types of polymethine dyes are suggested for nonlinear absorbers of tunable ultrashort-pulse rhodamine 6G lasers.

• Research Organization: Institute of Physics, Academy of Sciences of the Ukrainian SSR, Kiev
• OSTI ID: 5506989
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 12:1; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMINES
CARBOXYLIC ACIDS
DYES
ELECTROMAGNETIC RADIATION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
JETS
LASER RADIATION
LASERS
LIQUID LASERS
MODE LOCKING
OPTICAL PUMPING
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PULSES
PUMPING
RADIATIONS
REAGENTS
RHODAMINES