Generation of Sub-100-fs Pulses Directly from a Passively Mode-Locked Titanium:Sapphire Laser

1991 ◽  
Author(s):  
Patrick Georges ◽  
Thierry Lépine ◽  
Gérard Roger ◽  
Alain Brun
Keyword(s):  
Titanium:Sapphire Laser

A novel 311-nm Titanium:Sapphire laser therapy for alopecia areata: a pilot study of 19 patients

2020 ◽  
Vol 35 (4) ◽  
pp. 999-1002
Author(s):  
Ji Hae Lee ◽  
Ro Woo Lee ◽  
Gyong Moon Kim ◽  
Jung Min Bae
Keyword(s):  
Pilot Study ◽  
Laser Therapy ◽  
Alopecia Areata ◽  
Titanium:Sapphire Laser

Demonstration of a 1-W injection-locked continuous-wave titanium:sapphire laser

2002 ◽  
Vol 41 (36) ◽  
pp. 7583 ◽  
Author(s):  
Elizabeth A. Cummings ◽  
Malcolm S. Hicken ◽  
Scott D. Bergeson
Keyword(s):  
Continuous Wave ◽  
Titanium:Sapphire Laser

A Peltier cooled single pass amplifier for Titanium:Sapphire laser pulses

Laser Physics ◽  
2010 ◽  
Vol 20 (5) ◽  
pp. 967-970 ◽  
Author(s):  
A. Ozawa ◽  
W. Schneider ◽  
F. Najafi ◽  
T. W. Hänsch ◽  
Th. Udem ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Titanium:Sapphire Laser ◽  
Single Pass

Nondestructive and Nonintrusive Determination of Chemical and Isotopic Purity of Solvents by Near-Infrared Thermal Lens Spectrometry

1994 ◽  
Vol 48 (7) ◽  
pp. 833-842 ◽  
Author(s):  
Chieu D. Tran ◽  
Victor I. Grishko ◽  
Mauricio S. Baptista
Keyword(s):  
Thermal Lens ◽  
Near Infrared ◽  
Multivariate Calibration ◽  
Visible Region ◽  
Infrared Region ◽  
Titanium:Sapphire Laser ◽  
Excitation Light ◽  
Excitation Beam ◽  
Calibration Methods

A novel instrument which is based on the use of the thermal lens effect to facilitate the sensitive measurements of the absorption in the near-infrared region has been developed. In this instrument, the near-IR excitation light was provided by a solid-state, spectra-tunable (from 860 to 1060 nm) titanium:sapphire laser. The heat generated as a consequence of the sample absorption of the excitation beam was monitored in the visible region by a He-Ne laser. The data obtained were analyzed by multivariate calibration methods for the nondestructive, noninvasive determinations of chemical and isotopic impurities in solvents. Water in D2O and in tetrahydrofuran can be detected at levels as low as 0.006 and 0.3% (v/v). The method can also be used for the simultaneous determination of water and DMSO- h6 in DMSO- d6 and CD3OH in CD3OH, CD2HOH, and CDH2OH at levels as low as 10−3% (w/w).

Titanium: Sapphire Laser as an Excitation Source in Two-Photon Spectroscopy

1997 ◽  
Vol 51 (2) ◽  
pp. 218-226 ◽  
Author(s):  
W. G. Fisher ◽  
E. A. Wachter ◽  
Michael Armas ◽  
Colin Seaton
Keyword(s):  
Near Infrared ◽  
Average Power ◽  
Sapphire Laser ◽  
Excitation Source ◽  
Dye Lasers ◽  
Titanium:Sapphire Laser ◽  
Excitation Spectra ◽  
Two Photon ◽  
Double Beam ◽  
Synchronously Pumped

The passively mode-locked titanium: sapphire laser provides new opportunities for acquiring two-photon spectral data in the near-infrared, a region not commonly accessible to synchronously pumped dye lasers. This source generates pulses with peak powers near 100 kW at average powers over 1 W and is capable of yielding two-photon signals roughly two orders of magnitude larger than is possible with synchronously pumped dye lasers. However, the multimode output of this laser exhibits significant temporal and spectral pulse profile variations as the laser wavelength is tuned. As a consequence, peak powers of the titanium:sapphire laser can vary independently from average power across the tuning range. This wavelength dependence, coupled with the quadratic dependence of the two-photon signal upon the instantaneous power of the laser, precludes simple average power correction of nonlinear spectral band shapes. Here, we investigate the key properties of the titanium:sapphire laser as an excitation source for two-photon spectroscopy. We also identify a chemical reference suitable for obtaining source-corrected excitation spectra in the near-infrared using a double-beam, ratiometric approach; this is based on a source-in-dependent two-photon excitation spectrum for the laser dye coumarin-480 that has been obtained with a single-frequency titanium:sapphire laser. From these data, correction factors are generated for correction of multimode source data.

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