Pulse generation in a cw dye laser by mode−locked synchronous pumping

Harris, Joel M.; Chrisman, Ray W.; Lytle, Fred E.

doi:10.1063/1.87970

Cited by 52 publications

(11 citation statements)

References 8 publications

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“…An important distinction of the model used here and derived value. For example, the rate equation error in tp is (tp., -tp,,)/tp., 5 Although the error is small in magnitude, it is a nontrivial function of Ar. A finite coherence time also limits how fast the gain can react, and consequently semiclassical effects also manifest themselves measurably in the character of the primary pulse at all AT's considered.…”

Section: Coherence Effectsmentioning

confidence: 98%

Pump pulse effects in synchronously pumped mode-locked dye lasers

MacFarlane

Casperson

1989

J. Opt. Soc. Am. B

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We consider the role of the pump pulse in the output of a synchronously pumped mode-locked dye laser. Our theoretical formalism is a nonlinear dynamical model that includes semiclassical effects, dipole orientation, and intraband relaxation. In particular, we study the shortening of the output pulse with decreasing pump pulse length and increasing pump level. Both of these predictions agree with experiments.

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Section: Coherence Effectsmentioning

confidence: 98%

Pump pulse effects in synchronously pumped mode-locked dye lasers

MacFarlane

Casperson

1989

J. Opt. Soc. Am. B

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“…Although the laser was invented in 1958 3 and the rst report of mode-locking of a He-Ne laser appeared in 1964, 4 the wide use of picosecond pulses blossomed only after Lytle and co-workers rst reported synchronous pumping of a dye laser with a modelo ck ed A r 1 laser. 5 This rep ort showed the way to access widely tunable picosecond light pulses, and subsequent developments have led to shorter laser pulses and a plethora of applications for short-pulse measurements. In a very real sense, the Lytle group's work in the late 1970s enabled a eld that is represented in most major chemistry departments around the world today.…”

Section: Sh Ort-pulse and Tim E-reso Lved Spectro Scopiesmentioning

confidence: 99%

Time-Resolved and Short-Pulse Laser Spectroscopies

Blanchard

2001

Appl Spectrosc

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Despite the fact that chemists are trained to v iew m ost spectroscopic data in the frequency domain, there are some instances w here tim e-do m ain information provides greater insight. Any signal reported in the frequency domain can also be expressed in the time domain through the Fourier relationships, and we use this correspondence to advantage in Fourier transform infrared (FT-IR ) and FT-NM R (nuclear magnetic resonance) spectroscopies. Despite the Fourier relationships, for many real-world studies of molecular properties, any given spectroscopic band under investigation will be inhomogeneously broadened, m aking the connection between the time-domain response and the frequency-domain spectrum less clear than we would like it to be. In these cases, it is often necessar y to perform experimental m easurem ents in both domains to obtain a com plete understanding of the system.The focus of this article is on the strengths, limitations, and uses of time-domain and short-pulse laser spectroscopies. The capabilities of time-resolved m easurements are, of course, complementary to frequency-domain techniques, and this fact becomes clear when spectroscopies in the two domains are compared.Strengths of time-resolved and short pulse spectroscopies:1. Separation of spectroscopic phenomena (e.g., Raman and uorescence). 2. U ltrahigh sensitivity absorption m easurements. 3. Access to nonlinear spectroscopies. 4. Ability to study dynamical processes directly (e.g ., ro tatio nal diffusion, uorescence and vibrational lifetime, excitation transport). 5. M easu rem en t of ph oto ind uced transient species present at very low steady-state concentrations.Weaknesses of time-resolved and short-pulse spectroscopies:1. Identi cation of an unknown in the absence of other information. 2. Ability to provide unique ''survey'' or '' ngerprint'' information on a sample. 3. Establishment of the relationship between the experimental signal and structural information on a m olecule. 4. Ability to provide absolute, quantitative information on quantities such as concentration.The items indicated in the ''weaknesses'' list are all better suited to fre quency-dom ain spectroscopies. For example, from the acquisition of a UV-visible absorption spectrum, inform ation can (som etim es) b e gained on the identity of the chromophore, and, if the chromophore is known, it is a simple matter to quantitate its presence via Beer's law. For these reasons as well as convenience of use, frequency-domain spectroscopy is ubiquitous, and essentially all spectroscopic information presented in high school and collegiate science texts is shown in the frequency domain. The bias toward presenting inform ation in the frequency domain may be related to our ability to process spectroscopic information. Our eyes are well suited to operation in the frequency domain-a practiced eye can distinguish between laser beams with a 1 nm wavelength difference. Human detection gear for optical frequencies is less well suited to resolution of

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“…Because the cavity dumper had to be placed within the resonator, we implemented synchronous pumping, which is an earlier technique used to get picosecond output from pulsed dye lasers (20). At long last, we had the ideal source on which we could base our analytical studies (21).…”

Section: Exploring a New Fieldmentioning

confidence: 99%

Peer Reviewed: Twenty Years of Laser Research in Analytical Chemistry

Lytle¹

2000

Anal. Chem.

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Pulse generation in a cw dye laser by mode−locked synchronous pumping

Cited by 52 publications

References 8 publications

Pump pulse effects in synchronously pumped mode-locked dye lasers

Pump pulse effects in synchronously pumped mode-locked dye lasers

Time-Resolved and Short-Pulse Laser Spectroscopies

Peer Reviewed: Twenty Years of Laser Research in Analytical Chemistry

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