Del Mar Photonics

Laser light propagates as a beam in a certain direction with most of the power in a small area measured by the so called laser beam size.
Laser beams are often close to Gaussian beams, where the transverse profile of the optical intensity of the beam can be described with a Gaussian function, the width of which varies along the propagation direction. On the picture below you can see an infrared laser beam from Ti:Sapphire laser at 800 nm. The laser beam size in this picture is about 2 mm in diameter.

Infrared laser beam size (Ti:Sapphire laser, 800 nm) in this picture is about 2 mm in diameter.

Infrared laser beam size (Ti:Sapphire laser, 800 nm) in this picture is about 2 mm in diameter.

Regular digital cameras including those on smart phones can see near infrared light quite well. Humans usually can see in the range 400 - 700 nm (visible range), but digital camera can see 800 nm. Want to see it for yourself? Look through the camera on the remote control and push one of the buttons on it!



 

Del Mar Photonics - Newsletter Fall 2010 - Newsletter Winter 2010

Trestles LH femtosecond lasers with integrated DPSS DMPLH laser pump - DPSS DMP LH series advantages

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics
Tresltes LH10-fs/CW laser at Harvard University is used for STED microscopy of nanodiamons

 

Del Mar Photonics offers new Trestles fs/CW laser system which can be easily switched from femtosecond mode to CW and back.
Having both modes of operation in one system dramatically increase a number of applications that the laser can be used for, and makes it an ideal tool for scientific lab involved in multiple research projects.

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics

 

Typical specifications are:

Trestles LH10-fs/CW laser system Request a quote
Ti:Sapphire femtosecond oscillator with CW operation option
Spatial mode: TEMoo;
Polarization: linear horizontal;
fs mode:
Tuning range (@10W pump): 750-850 nm;
Output power (@10W pump, 800 nm): >1500 mW;
Repetition rate: 80 MHz;
Pulse duration: <100 fs;
CW mode:
Tuning range (@10W pump): 750-850 nm;
Output power (@10W pump, 800 nm): >2000 mW in CW;
Linewidth (with two etalons): <2 GHz
Also included:
Thermostabilized breadboard;
Electronic starter with TTL output for mode-locked mode observation;
USB-controlled tuning slit for wavelength tuning in fs mode;
3-plate USB-controlled birefringent Lyot filter;
Two motorized USB-controlled etalons for linewidth control

DPSS LH10 (10 Watt Diode Pump Solid State Laser) - DPSS DMPLH lasers
Average Output Power > 10 W
Wavelength 532 nm
Spectral Purity > 99.9 %
Spatial Mode TEM00
Beam Quality (M2) 1.0 - 1.1
Beam Ellipcicity < 1.0 : 1.1
Beam Diameter 2.3 mm ?10%
Beam Divergence < 0.5 mrad
Pointing Stability < 2 μrad/?/font>C
Power Stability < ?0.25 % rms
Noise Standard version: < 0.2 % rms
Low noise (NET) version: < 0.03 % rms
Polarization > 100:1 vertical
Power Requirements
Operating Voltage 100-240 VAC, 50 Hz / 60 Hz
Power Consumption 500 W max, 300 W typical
Cooling Requirements
Laser Head Closed-loop chiller in Power Supply - Cooler
Power Supply (in Power Supply - Cooler) Air-cooled
Environmental Specifications
Operating Temperature 64-90?/font>F (18-32?/font>C)
Relative Humidity 8-85%, non-condensing
Laser Head - Physical Dimensions (Height x Width x Length)
2.7 x 5.3 x 10.1 inches
(69 x 135 x 256 mm)
Weight 7.0 lbs (3.2 kg) approx.
Cable Length 10 " (3 m)
Power Supply-Cooler - Physical Dimensions (Height x Width x Depth)
13.0 x 12.7 x 18.2 inches
(330 x 323 x 463 mm)
Weight 55 lbs (25 kg) approx.

 

Trestles fs-CW manual

Schematic setup of Trestles femtoseconds/CW laser system with built-in pump laser

Schematic setup of Trestles LH10-fs/CW laser system with built-in pump laser

Del Mar Photonics supply Trestles lasers as stand alone system, or as a one-box system with built-in DPSS pump laser.
The price of the system with DPSS pump depends on required output power.

 

The standard tuning elements indicated below are used in CW Ti:Sapphire lasers such as Trestles CW or Trestles fs/CW.

Those elements are also sold separately as standrad items or as a custom made components.

1) Thick etalon - request a quote
Thickness - 3 mm, diameter - 20 mm. Surface quality: Ð=1-2, N<1, ΔN<0.1,
λ/10, plane parallelism better than 10''. Thickness accuracy 5 um.

2) Thin etalon - request a quote
Thickness - 200 um, diameter - 15 mm. Surface quality: Ð=1-2, N<1, ΔN<0.1,
λ/10, plane parallelism better than 10''. Thickness accuracy 5 um.

3) Birefringent filter BRF - request a quote

We use a 3-plate assembled BRF (Lyot filter) with adjustable motorized mount (see attached drawing).

Total losses introduced into the cavity by the filter are 5% of the lasers output power. The FSR is defined by the thinnest plate and equals to around - 1.3*1014 Hz, while the maximum width is controlled by the thickest plate and equals to approx. 3.1*1012 Hz.

Dimensions of plate assembly ('filter' in the picture): dia 44.5 mm, t=13.5 mm. It should be properly aligned (Brewster to the beam) and rotated by some rotating mount around its axis to provide wavelength tuning.

Birefringent Filter for tuning Ti:Sapphire laser

Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics
sales@www.alaindidierweill.com

 

Del Mar Photonics

Third and Forth Harmonic Generator for Ti:Sapphire lasers: Three Case studies

Customer inquiry:

We have about 1 W across the range 780nm to 920 nm. We are interested mostly in tunability in the range 240-300nm. Pulse width is not very > important. If a (third + fourth) HG exists in one model, that would be great. Also it would be good for us to have several wavelength available at the same time, i.e. fundamental and harmonics.
I want to use this system for a photoemission microscope, and my first interest is in the tuning capability. The second interest is in building up a pump-and-probe system using the fundamental or 2nd harmonic as a pump beam and the third harmonic as probe. Do you have suggestions for the delay-line?

Answer:
We can offer our multiharmonic (SH, TH) generator unit. The simultaneous output will have around 10% (100 mW) of your input power in fundamental and each of harmonics (10% fundamental, 10% second and 10% third). Each harmonic has its own output (see attachment). The tuning range will be 260-300 nm for TH with your input tuning range.
The FH system will produce 205-230 nm radiation out of your laser (780-920)

 

=========================================================

 

Customer inquiry:
I'm interested in the 3^rd harmonic generator for an amplified Ti:sapphire laser. What is the maximum pulse energy? The system is a Coherent regenerative amplifier (RegA 9000) that produces 750 mW at a repetition rate of 100 kHz, which is a pulse energy of 7.5 microjoules in 50 femtoseconds. The beam diameter is 2.7 mm.

We have tried to use a Coherent 9300 harmonic system, but it is designed for oscillator energies of nanojoules, so it is too tightly focused on the crystal and generates white light.


Answer:

Please find enclosed the quotation for the TH generator along with the drawing. Please note that since the unit is non-standard the dimensions may be extended by +100 mm in length and +50 mm in width.

Third Harmonic Product brochure


 

Sample quote for Third Harmonic Generator for Amplified Ti:Sapphire Laser

Third Harmonic Product brochure - Third Harmonic Generator Manual - Forth Harmonic Generator manual - request a quote

ATsG800 Third Harmonic Generator
Second and third harmonic outputs
Input wavelength for TH ?750-900 nm
Input wavelength for SH ?710-960 nm
Input pulse width - >20 fs
Conversion efficiency for TH ?7-8% (depends on input
parameters)
Conversion efficiency for SH ?>30% (depends on input
parameters)
Pulse broadening - <150 fs
Input pulse energy ?8 μJ

Unit price: $14,000
 

=================================================================

Customer inquiry:

Im interested in the 3rd harmonic generator for an amplified Ti:sapphire laser. What is the maximum pulse energy? The system is a regenerative amplifier that produces 750 mW at a repetition rate of 100 kHz, which is a pulse energy of 7.5 microjoules in 50 femtoseconds. The beam diameter is 2.7 mm. We have tried to use a Coherent 9300 harmonic system, but it is designed for oscillator energies of nanojoules, so it is too tightly focused on the crystal and generates white light.

Del Mar Photonics:

We can offer about 7-8% efficiency, the version for 8 uJ will be non-standard. Please find enclosed the quotation for the TH generator along with
the drawing. Please note that since the unit is non-standard the dimensions may be extended by +100 mm in length and +50 mm in width.

Third harmonic generator (THG) is developed for frequency doubling and tripling of Ti-Sa amplifier radiation (λ=780-820 nm). Device is based on second harmonic generation (SHG) and sum-frequency generation (SFG) techniques and provides stable radiation in fs scale. TH generator is developed for high conversion efficiency.

Femtosecond third harmonic generation for amplified Ti:sapphire laser - THG brochure - THG manual - Request a quote

SPECIFICATIONS
?Pulse width - 40-60 fs
?TH efficiency - > 7 %*
?SH efficiency - >25 % (full output**)
?Input beam size (FWHM) - 2.7 mm ***
?Input energy in pulse > 8 μJ
?Temporal broadening - For TH pulse< 250 fs
For SH pulse <100 fs
?Input polarization - Linear- horizontal
?Output TH polarization - Linear- horizontal
?Output SH polarization - linear- vertical
?Output fundamental
beam polarization
- linear- vertical
?Input wavelength - 780 ?820 nm
?Output TH wavelength - 260 ?274 nm
?Output SH wavelength - 390 ?410 nm
?Dimensions - 500mm x 362mm x 188mm

* - assuming that pulse is compressed;
** - just after the flip-mirror M7;
*** - assuming that 1.5<M2<2.

Request a quote - Third Harmonic Product brochure - Third Harmonic Generator Manual - Forth Harmonic Generator manual - Third Harmonic Generation of Ti:Sapphire Laser Kits

 

Request a quote

 

 

Product Data Sheets

Featured: Trestles LH femtosecond lasers with integrated DPSS DMPLH laser pump - DPSS DMPLH lasers

Del Mar Photonics Product brochures - Femtosecond products data sheets (zip file, 4.34 Mbytes) - Del Mar Photonics

Send us a request for standard or custom ultrafast (femtosecond) product

Pulse strecher/compressor
Avoca SPIDER system
Buccaneer femtosecond fiber lasers with SHG Second Harmonic Generator
Cannon Ultra-Broadband Light Source
Cortes Cr:Forsterite Regenerative Amplifier
Infrared cross-correlator CCIR-800
Cross-correlator Rincon
Femtosecond Autocorrelator IRA-3-10
Kirra Faraday Optical Isolators
Mavericks femtosecond Cr:Forsterite laser
OAFP optical attenuator
Pearls femtosecond fiber laser (Er-doped fiber, 1530-1565 nm)
Pismo pulse picker
Reef-M femtosecond scanning autocorrelator for microscopy
Reef-RTD scanning autocorrelator
Reef-SS single shot autocorrelator
Femtosecond Second Harmonic Generator
Spectrometer ASP-100M
Spectrometer ASP-150C
Spectrometer ASP-IR
Tamarack and Buccaneer femtosecond fiber lasers (Er-doped fiber, 1560+/- 10nm)
Teahupoo femtosecond Ti:Sapphire regenerative amplifier
Femtosecond third harmonic generator
Tourmaline femtosecond fiber laser (1054 nm)
Tourmaline TETA Yb femtosecond amplified laser system
Tourmaline Yb-SS femtosecond solid state laser system
Trestles CW Ti:Sapphire laser
Trestles femtosecond Ti:Sapphire laser
Trestles LH femtosecond lasers with integrated DPSS DMPLH laser pump - DPSS DMPLH lasers
Trestles Finesse femtosecond lasers system integrated with DPSS pump laser
Wedge Ti:Sapphire multipass amplifier

E-mail us for a custom quote

Trestles LH femtosecond lasers with integrated DPSS DMPLH laser pump - DPSS DMP LH series advantages

Trestles LH10-fs/CW laser system at UC Santa Cruz Center of Nanoscale Optofluidics
Tresltes LH10-fs/CW laser at Harvard University is used for STED microscopy of nanodiamons

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