DORIC LISER, User Manual

Page 1: ... LISERTM LED LD Light Source User Manual Version 1 0 0 ...

Page 2: ...ng Principle 6 2 2 Overview of the LISERTM LED LD Light Source 8 2 3 Overview of the Bandpass Filter for LISERTM 9 3 Operations Guide 10 3 1 Getting Started 10 3 2 FC Connector Installation 12 4 Doric Neuroscience Studio 13 4 1 Channel Configuration 13 4 2 Control ans Settings 21 4 3 Acquisition View 23 5 Specifications 25 6 Support 27 6 1 Maintenance 27 6 2 Warranty 27 6 3 Disposition 27 6 4 Contac...

Page 3: ...aser product emitting visible light at sufficiently high power levels to PERMANENTLY DAMAGE THE EYES NEVER LOOK directly into the optical beam exiting from the output FC connector or from any optical fiber connected to the output FC connector NEVER LOOK directly at specular or diffuse reflections of the output beam It is important to WEAR LASER SAFETY GLASSES goggles certified for the wavelength and pow...

Page 4: ... 2 Safety feature block diagram The Micro controller Key Switch Interlock Plug and Current Driver are connected in series This means that if any single safety feature is not properly in place the light source cannot be activated The Micro controller is used to control the light source driver a Key Switch b Interlock Plug Figure 1 3 Safety Feature Elements The Key Switch Safety feature 1 Fig 1 3a l...

Page 5: ...Plug has an open circuit it cannot receive signals from the micro controller preventing it from sending out current 1 5 Emission Indicator For light sources emitting invisible laser radiation a dedicated LED indicator is ON when the driver is outputting an electrical current When the driver is outputting current the light source will emit light from the aperture Chapter 1 Important Safety Informat...

Page 6: ...rinciple must be scaled in term of pump power The power scaling first requires a higher brightness pump source emitting blue light In the Doric LISERTM light source high power blue laser diodes LDs emitting at 450 nm are used to provide a much smaller pumped volume of the Ce YAG crystal Such a direct power scaling of the pumping source leads to thermal failures Indeed a high brightness pumping lead...

Page 7: ...Figure 2 1 Output Power Spectral Density of a LISERTM Fiber Light Source using 200 µm 0 53 NA Fiber Chapter 2 Overview 7 ...

Page 8: ...wing the selection of a narrow part of the broad Ce YAG spectrum of emission The filter holder can accept any filter up to a 25 4 mm diameter and a maximum 5 mm thickness The BNC LISER Input Port is used to command the LISERTM source The BNC LED Input Port is used to command the LED LD source The BNC LISER Output Port is used to monitor the LISERTM source The BNC LED Output Port is used to monitor t...

Page 9: ...cal bandpass filter The light source contains a Removable Filter Holder that can accept filters with an outside diameter of 25 4 mm and maximum thickness of 5 mm The filter is placed between the LISERTM light source and the combiner and is held in place magnetically A wide variety of filters are available in our Website Figure 2 3 Bandpass Filter for the LISERTM in its holder Chapter 2 Overview 9 ...

Page 10: ...t is highly recommended 2 Ensure that the ON OFF switch of the driver is set to OFF 3 Connect the LISERTM LED LD Light Source to the power outlet with the included 12 V AC DC adapter WARNING DO NOT OPEN the enclosure of the driver Electrical hazards may result The driver does not contain any user serviceable components 4 The optical head is sensitive to electrostatic discharges use proper groundin...

Page 11: ...e signal from another device consequently the light source will be triggered To follow an external device select the external TTL or the external analog mode for the desired channel see section 4 1 2 14 If needed connect a data acquisition system or an external device to the LISERTM LED LD Light Source by using the output BNC port of the desired channel A data acquisition system enables the viewin...

Page 12: ... an FC connector the connector key must be oriented to enter within the receptacle slot to ensure proper connection Fig 3 2 Figure 3 2 FC connector Fiber Installation To reduce the risk of eye injury it is sound practice to NOT CONNECT DISCONNECT OPTICAL FIBERS when the light source is turned on Chapter 3 Operations Guide 12 ...

Page 13: ... source of its given type These channels accessible using the Add Channel button will be the first detailed 4 1 Channel Configuration 4 1 1 Channel Configuration Window Overview Figure 4 1 Channels Configuration Main Interface The Channels configuration window is used to configure each channel The window can be accessed by using either the Add Channel or Edit buttons This window is separated into multip...

Page 14: ...on will close the window without saving the current channel configuration 4 1 2 Channel Options Section Figure 4 2 Channel Options of the Channel Configuration Window The Channel Option section Fig 4 2 is separated in 3 sub sections the LightSource Options section that defines the channel and its mode the Current Options and the Trigger Options section that control the trigger method of the selected ...

Page 15: ...s the different available combinations for the different Trigger Modes Four Modes are available and are the following Uninterrupted This mode activates the channel sequence when an input greater than 3 3 V is detected by the BNC input Following input pulses will be ignored while the sequence is running Fig 4 3 When the Repeatable sequence checkbox is checked the sequence will restart with the arriva...

Page 16: ...ble Sequence Output Triggers d Gated Repeatable Sequence Figure 4 4 Pause Sequence Mode Output Triggers a Triggered Non Repeatable Sequence Output Triggers b Triggered Repeatable Sequence Output Triggers c Gated Non Repeatable Sequence Output Triggers d Gated Repeatable Sequence Figure 4 5 Continue Sequence Mode Output Triggers a Triggered Repeatable Sequence Output Triggers b Triggered Gated Sequ...

Page 17: ...Type Mode and Repeatability Triggered Gated Non repeatable sequence Repeatable sequence Non repeatable sequence Repeatable sequence Uninterrupted Pause Con nue Restart Figure 4 7 Trigger options possibilities 4 1 3 Sequence s Options Section Continuous Wave The Continuous Wave mode is used to set the Light Source to a chosen intensity without variations during experi ments External TTL The Externa...

Page 18: ... The Time ON defines the length of a single pulse This time can also be converted to a Duty Cycle which represents the of the period the pulse duration corresponds to 4 The Smoothing check box allows to change the pulse slope in square pulse sequences The Edit Edges button opens the Smoothing Edge s window An overview of the window opened by Edit Edges will be done in the next subsection 5 The Puls...

Page 19: ...imum value 2 The Plateau Time box is used to define the duration the pulse at its maximum value 3 The Fall Time box is used to define the duration to descend from the pulse maximum value to 0 mA 4 The Pulse Graph displays the pulse shape 5 The Active Time box displays the total duration of the pulse While the Smoothing option is active the Time ON is fixed at this value 6 The OK button save the chang...

Page 20: ... is changed the other will adjust automatically For example a signal at 10 Hz frequency will output one pulse every 100 ms period whereas a pulse sequence at 0 5 Hz frequency will output one pulse every 2000 ms period 7 The Time ON Duty Cycle sets the time in ms or the duty cycle in for each pulse These two values are linked and when one is changed the other will adjust automatically The Time ON m...

Page 21: ...ol allows all channels to share the same timing 3 The Interlock indicator displays when the interlock is correctly connected and when disconnected more details in the section 1 4 4 The LISER Temp indicator displays the temperature of the LISER source in real time This indicator will only appear when a LISER driver is connected to the computer Should the temperature be too high the temperature will...

Page 22: ...e Launch button starts the sequence 4 2 2 Configuration Tab Figure 4 13 Configuration Tab The different buttons of the Configuration Tab are shown in Figure 4 13 and their functions are explained below 1 The Add Channel button opens the Channels Configuration window to setup the channels This window is detailed in section 4 1 2 The Clear Configuration button resets the acquisition view and all other par...

Page 23: ...axis of all graphs displayed in the Acquisition View to the duration chosen in the Autoscrolling field 4 3 Acquisition View 4 3 1 Acquisition View Overview Figure 4 15 Experiment View The Acquisition View fig 4 15 is composed of two sections 1 The Controls View displays all elements to control configure the channel An overview this part will be done in section 4 3 2 2 The Graph View displays a previe...

Page 24: ...Channel Configuration window is done in section 4 1 3 The Current Box allows the current to be changed exactly in mA 4 The Current Slider allows the light source current to be adjusted 5 The Status box displays the status Light source The Status will display RUNNING when active and STOPPED when deactivated 6 The Trigger Mode of the light source is displayed in this box For more information on the d...

Page 25: ...data sheet LISERTM Rise Fall time 10 µs LED Analog input voltage 400 mA V light source current Standard 1 A LED Driver 40 mA V light source current Low power mode enabled LED BNC output voltage 2 5 V A LED Maximum output current range 200 2000 mA LED Maximum forward voltage 7 V LED Minimum output current 2 5 mA Low power mode enabled LED Rise Fall time 10 µs Typical LD Analog input voltage 80 mA V...

Page 26: ...e 5 h Maximum number of pulses per sequence 16 68 millions1 Internal complex mode 65 535 Maximum number of sequences 4 2 billions1 Internal complex mode 65 535 Minimum step increments 39 µsec1 Internal complex mode only Number of steps per period 1281 Internal complex mode only Table 5 3 Recommended Environmental Specifications Specification Operation Storage Use Indoor Indoor Temperature 20 C to 30...

Page 27: ...tated in this manual For more information see our Website 6 3 Disposition Figure 6 1 WEEE directive logo According with the directive 2012 19 EU of the European Parliament and the Council of the European Union regarding Waste Electrical and Electronic Equipment WEEE when the product will reach its end of life phase it must not be disposed with regular waste Make sure to dispose of it with regards ...

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