New dye laser systems with dynamic distributed feedback

Vashchuk, V I; Zabello, E I; Tikhonov, E. A.

doi:10.1070/qe1978v008n07abeh010436

Cited by 8 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An empirical equation for intensity (I) in terms of optical density (p) was found to be Log I = 1.377 -1.0083 p + 0.3363 p2 -0.0436 p3 + 0.0022 p4 (1) The Data of laser streak records was converted from characters into numbers by a small program in basic. The negative films were scanned by a computer-controlled microdensitometer.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

<title>Peak pulse-shifting phenomenon in distributed feedback dye lasers</title>

Khan

Hall

Claire³

1999

SPIE Proceedings

View full text Add to dashboard Cite

Findings of an experimental study of integral gain accwnulation during repetitive excitation of distributed feedback dye lasers are presented. The DFDL was excited by 10 to 20 pulses of second harmonic of a passively Q-Switched and mode-locked Nd:YAG laser. The signals of DFDL and Nd:YAG laser were recorded by Imacon 675-streak camera with no relative delay. It was found that the peak of DFDL output envelope of pulses was delayed from peak of the excitation Nd:YAG envelope of pulses by more than one inter-pulse period (2L/C) of excitation laser. Various types of cases such as different excitation energies and inter-pulse time periods were studied and a DFDL intensity based model was developed. The delay between the peaks of pulse envelopes of Nd:YAG and DFDL depends upon the inter-pulse period (2L/C) of the excitation laser. A computer program was used to simulate the experimentally measured delay to estimate thermal decay constants and energy retained by the medium. It was found that for smaller inter-pulse periods the effect of gradual gain build-up becomes very significant to effect some of the more sensitive applications such as energy per pulse in laser eye treatment, photomc switching and bit error rate in fiber optic communication.

show abstract

Section: Discussion Of Resultsmentioning

confidence: 99%

<title>Peak pulse-shifting phenomenon in distributed feedback dye lasers</title>

Khan

Hall

Claire³

1999

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…Typical arrangements include Shank type geometry, prism-dye cell geometry, reflection or transmission grating geometry and telescopic geometry [8][9][10][11][12][13][14][15][16]. A few representative arrangements are shown in Figure …”

Section: Dfdl Configurationsmentioning

confidence: 99%

Ultrafast distributed feedback dye lasers

Khan

2000

SPIE Proceedings

View full text Add to dashboard Cite

A distributed feedback dye laser (DFDL) was experimentally studied to determine the utmost lower limit on ultrafast pulse generation. The ultimate aim was to determine its suitability as a cheaper high peak power laser source. The dye cell was excited by the 2nd harmonic of a laboratory built cavity dumped passively q. switched and modelocked Nd: YAG Laser to induce temperature phase grating in dye solution. Different features studied include threshold conditions, pulse shortening by reducing cavity length, polymerization limitations, simultaneous induction of multiple superimposed gratings, line narrowing, polarization, temporal and spectral characteristics.The pump polarization affect on dynamic gratings and threshold conditions indicated the number of lasing lines (maximum nine) or intensity of a single line depends upon the state of pump polarization (SOP). Various types of tuning methods such as Bragg index, refractive index, half angle and state of pump polarization were tested for improved divergence, bandwidth, line-width and wider spectral ranges. The combined effect of coherence length and SOP of excitation laser on emission of multiple lines was studied without using external gratings. The results of this critical and contemporary work on DFDL is in agreement with most of the published results and opens a new era for their potential suitability in optical communication, sensing and photonic devices.

show abstract

A novel picosecond distributed feedback dye laser arrangement for excimer laser pumping

Bor

Szabó

1988

Appl. Phys. B

View full text Add to dashboard Cite

New dye laser systems with dynamic distributed feedback

Cited by 8 publications

References 3 publications

<title>Peak pulse-shifting phenomenon in distributed feedback dye lasers</title>

<title>Peak pulse-shifting phenomenon in distributed feedback dye lasers</title>

Ultrafast distributed feedback dye lasers

A novel picosecond distributed feedback dye laser arrangement for excimer laser pumping

Contact Info

Product

Resources

About