PI miCos GmbH - CA-1230 Nd:YAG Laser


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Available options for
extensions:

CA-1231
Optical
Frequency Doubling:

components to upgrade the kit to 'Optical Frequency Doubling' (CA-1231)

CA-1232
Short pulse
generation by Active
Q-switching:

components to upgrade the kit to 'Short pulse generation by Active Q-switching' (CA-1232)

CA-1233
Short pulse
generation by Passive
Q-switching:

components to upgrade the kit to 'Short pulse generation by Passive Q-switching' (CA-1233)

CA-1230 Nd:YAG Laser

CA-1230 Nd:YAG Laser

DESCRIPTIOn

Besides the CO2 lasers the number of applications for diode pumped Nd:YAG laser in industry grew very fast in the last years. Nd:YAG lasers are used e.g. for engraving, drilling and welding purposes in all fields of industry. learn more...

The educational kit CA-1230 is provided to train students in understanding of the laser diode pumped Nd:YAG laser with all its constants and properties. The kit teaches the students theory of Nd:YAG lasers including the discussion of rate equation model, steady state solution and dynamic behavior.
The kit uses a 450 mW laser diode with integrated TE-cooler and thermistor to control the laser temperature. All components to set up a complete laser diode pumped Nd:YAG laser with all necessary optics like crystal, mirrors, lenses and collimators are included. The provided versatile electronics controller combines the laser diode temperature and injection current control, a build in function generator to modulate the laser diode current and a photo diode amplifier converting the light signals for the measurements to be done:

stability criterion of resonator
dependence of pump wavelength on
laser temperature and injection current
absorption spectrum of Nd:YAG

Available options for extensions:

components to upgrade the kit to
'Optical Frequency Doubling' (CA-1231)

components to upgrade the kit to
'Short pulse generation by Active
Q-switching' (CA-1232)

components to upgrade the kit to
'Short pulse generation by Passive
Q-switching' (CA-1233)

CA-1230 Nd:YAG Laser

Educational Objectives


	Properties of Laser Diod
	Optical Pumping
	Rate Equation Model
	Static & Dynamic Behavior
	Output Power
	Resonator Properties
	Stability Criterion
	Laser Spiking

Drawing


01	Flat rail 500 mm with scale
02	Laser diode 450 mW in X-Y adjustment holder on carrier
03	Control electronics LDS 1200
04	Beam shaping optics in holder on carrier
05	Beam focusing in holder on carrier
06	Nd:YAG crystal in holder adjustable on carrier
07	Laser mirror holder adjustable on carrier
08	Filter holder on carrier with filter RG1000
09	Photo detector in holder on carrier and adjustment target
10	3 BNC cables
11	IR detector converter screen 800-1600 nm
12	Set for optics cleaning
13	User manual

Performance of Measurements:

Measurements and Handling

1.) Laser diode output power versus current

The relative output power of the laser diode used for optical pumping can be measured in dependence on the injection current. Parameters like laser threshold and slope efficiency are evaluated. learn more ...


2.) Absorption/fluorescence spectrum of Nd:YAG The absorption spectrum of the Nd:YAG crystal in dependence of the temperature of the laser diode is measured. Using the known absorption lines of Nd:YAG the transmitted intensity or the fluorescence intensity of the crystal is measured. By varying the laser diode temperature its emission wavelengh is scanned.


3.) Wavelength dependence of injection current Increasing of wavelength proportional to raising power is characteristic for laser diodes. To compensate this behavior it is necessary to vary its temperature. Operation at a constant wavelength is realized by working at an absorption minimum (i.e. maximum transmission) and optimize the temperature and current for maximum transmission.


4.) Measurement of life time of fluorescent light
	The life time of the 4F3/2 level is the starting level for the emission at 1064 nm. The fluorescence of the Nd:YAG crystal pumped by the laser diode is detected. The current of the diode is TTL modulated and the decay curve of the fluorescence is measured.

5.) Demonstration of laser spiking
	Laser spiking as a result of switching on of the laser is demonstrated. Working close to the laser threshold and in a rectangular modulation mode the effect of spiking and its damping is nicely observable.

6.) Output power of the Nd:YAG laser versus pump power
	The relative output power of the Nd:YAG laser can be measured in dependence on the pump power of the laser diode. Parameters like laser threshold and slope efficiency are evaluated.

Ordering Info and Details on Request:

Please fill in all fields marked with *

Basic Kit:
CA-1230 Nd:YAG Laser:

CA-1230

* 4900-9-

Options for CA-1230 Nd:YAG Laser:
Available options for extensions components to upgrade the kit to:

CA-1231

'Optical Frequency Doubling'

1

CA-1232

'Short pulse generation by Active Q-switching'

2

CA-1233

'Short pulse generation by Passive Q-switching'

3


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