JPS60111486A - Laser device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A laser device adapted for ophthalmological use having a closely spaced spherical pump cavity with diverging reflective surfaces, the laser crystal and the excitation flashlamp being non-parallel within the cavity. It is a device that is installed in a suitable manner. The laser crystal is formed by a concave rear mirror and a convex front output mirror within an unstable resonator. The Q-switch is sandwiched between the crystal and one of the mirrors to allow for Q-switched and non-Q-switched modes of operation. A low power, continuous output, visible light radar is directed through the rear mirror and laser crystal to provide a pilot beam for aiming and focusing. The radar output is directed through a slit lamp biomicroscope to a focusing device, both directed into the patient's eye. The laser output source has multiple capacitors arranged in a puncture,
Controlled by a microprocessor, it fires a pulse of a predetermined voltage (8) into the flashy run either singly or continuously, and according to commands it emits pulses, bursts of pulses or repetitive waves. Produces russ.

The controller also operates the Q-switch in synchronization with the flashy runzo when switching of the Q-switch is required. The device may be operated in a thermal mode in which the laser crystal is stimulated by repetitive rung flashes closely spaced such that the stimulated electron inversion is maintained. The result of a long pulse train within a predetermined time-power envelope is exactly like a continuous beam and produces the thermal physiological effects required for some laser surgical procedures. In the Q-switched mode, the combination of microprocessor control, short optical pumping cavity, unstable cavity geometry and small diameter, short high gain crystal produces high intensity, high quality beam and precise duration. Produces very thin spacing and energy.

PRIOR ART In recent years, laser devices have been widely adopted in the field of ophthalmic surgery, primarily because laser devices allow intraocular surgery to be performed with little or no post-disturbance of undesirable surgical trauma. It is because of the ability to be accomplished.

Surgical laser devices are used for a variety of purposes, such as photocoagulation of excised tissue and tissue removal within the eye. In the former case, the treatment requires relatively long laser irradiations at relatively low power. The latter case requires the use of high peak energy pulses with significantly shorter duration light energy. Such a pulse can destroy the focal spot and its surrounding tissue without causing undesirable thermal effects. It is generally true that devices capable of delivering laser radiation for long periods of time are not capable of generating the short, high-intensity pulses required for certain procedures.

A prior art device illustrating the state of the art for devices in the latter case is disclosed in US Pat. No. 4,309,998.

This device uses a Q-switch using a YAG crystal.
With a mode-locked laser, a small point of light generates a beam short and strong enough to allow surgical removal. However, such devices generate a series of closely spaced germs of a relatively uncontrolled type.

It is difficult to accurately select the desired output energy or number of lass generated. Furthermore, this laser cannot be operated to produce the thermal effects necessary in certain ophthalmic surgical procedures.

Also, 1. The prior art device described above is typical of the prior art requiring a relatively ineffective cooling system to remove the heat generated within the laser resonator.

Refrigeration systems are mechanical devices that require maintenance and, as a result, are prone to failure. Cooling devices also substantially increase the size of the laser device, making it bulky and difficult to package into a usable and convenient form.

The present invention generally consists of a laser device suitable for ophthalmological use, which device is compact in shape, easy to use and maintain, and is capable of reducing the effects of light, as well as photocoagulation and similar thermal effects. Surgical cutting is possible by point. The laser resonator of the present invention uses a novel optical pumping cavity to reduce the length of the resonator, thereby reducing the output pulse width. The novel cavity shape also reduces the need for cooling equipment, thereby significantly simplifying the mechanical design of the device.

The optical pumping chains have a closed spherical cavity in which a Nd:YAG crystal and an excitation flash lamp are mounted non-parallel.

A small diameter, highly doped Lehde crystal is formed as an unstable resonator by a concave rear mirror and a convex front output mirror. A Q-switch is placed between the crystal and one of the mirrors, allowing selectively Q-switched and non-Q-switched modes of operation. The continuous output □slaser is directed through the rear Milani and Lehde crystals to provide a target beam for aiming and focusing. The laser output is directed through the slit lamp assembly to the focusing device, both of which are directed to a common focal point within the patient's eye.

The laser output source has a plurality of capacitors arranged in a puncture pattern and is controlled by a microprocessor to emit pulses of predetermined voltage to the flood lamp either singly or continuously according to instructions.・Produces a burst of russ or repeated ・9 russ. The controller also operates the Q-switch in synchronization with the flashlamp when switching of the Q-switch is required.

The device may be operated in a thermal mode in which the laser crystal is stimulated with repetitive two-ring flashes closely spaced such that the stimulated electron inversion is maintained. For a predetermined period of time - a long
The result of the wave train closely approximates a continuous output and produces the thermal physiological effects required for certain types of surgical procedures. In the Q-switched mode, the combination of microprocessor control, short optical pumping cavity, unstable cavity geometry and small diameter, short high gain crystal produces high intensity, high quality beam and precise duration. It produces very narrow pulses of energy at intervals.

[Preferred embodiment]

The present invention generally comprises a laser device for ophthalmological surgical use, which device is compact in shape, simple and easy to use and maintain, and outputs tissue ablation and thermal effects. can provide both. The laser device also has a microgrosser control device that provides precise selection of power output, fluence energy, pulse width, and number of pulses. The laser device operates in Q-switched mode to generate one or multiple pulse trains, and also in free-running mode.
g) in "thermal" mode, which mimics continuous output and can serve to induce thermal physiological effects of long-term laser irradiation;

Referring to FIG. 3, the laser arrangement of the present invention has a pace plate 11 on which actuating elements are suspended. The pace plate is approximately 6 inches (15.24 cm) by 10 inches (25.4 cm)
may be made of reed, amber or similar material having a very low coefficient of thermal expansion. pace-play)1
Fixed to 1 is a novel optical pumping assembly 12, which is shown in greater detail in FIG.

The assembly comprises a generally cubic object formed by a pair of rectangular solid members 13 and 14.

Each of the members 13 and 14 has a hemispherical cavity formed in their opposing faces and are arranged to provide accurate overlapping when the members are connected to each other.

In a preferred embodiment, the cubic object has a lateral dimension of approximately 1.5 inches (3.81 centimeters);
The spherical cavity 18 formed by the two hemispherical cavities is approximately 1 inch (2.54 centimeters) in diameter. Members 13 and 14 are formed of solid aluminum or a material of similar thermal and structural properties and are connected by screws received in threaded holes.

Each of members 13 and 14 has bores 19 and 21 that extend through cavities 16 and 17, respectively. In the preferred embodiment, deres 19 and 21 are arranged orthogonally, but the arrangement is not critical to operation. The dea is located close to the opposing surfaces of members 13 and 14.

Fixed to the door 19 is a flashlamp 22 having an output portion of the flashlamp disposed within the cavity 18 and electrodes 23 and 24 protruding from the assembly 12. A laser rod 26 is fixed to the pore 21. In a preferred embodiment, the radar rod is a Nd:YAG crystal that is heavily doped with neodymium to provide high amplification. The small diameter of rod 26 increases the capacity of the device and the quality of the output beam.

The internal surface of the cavity 18 is extensively treated with a highly effective reflective coating, with a reflectance of more than 99%.

Sorimachi materials such as barium sulfate powder mixed with a binder are
It is applied directly to the interior surface of cavity 18. For greater durability (cavities 16 and 17 may be hemisphere-lined with glass, and binder-free high-purity barium sulfate powder is applied between the outer surface of the lath and the inner surface of the cavity). It may be fixed in between.

The assembly 12 is fixed to the pace grate 11 by means 21, and the laser output P26 is precisely aligned with the optical axis. The optical pumping assembly is placed within a laser cavity formed by mirror assemblies 32 and 33. The mirror assembly 32 includes a mirror 34 having a spherical surface with a radius of curvature of 50c1n, the mirror 34 having a concave surface coated with a multilayer insulating material that reflects more than 99 degrees at a YAG laser wavelength of 1.064 micrometers. It has 35. The mirror assembly 33 has a spherical convex surface 36 with a radius of curvature 33α.
has. The mirror is formed on a meniscus substrate 37, with anti-reflection coatings 38 on both sides of the substrate.
(at YAG radar wavelength) is applied. In the center of the convex surface, in order to form a reflective spot 39,
A coating that is highly reflective at the YAG laser wavelength is deposited on a spot greater than 2.2 mm in diameter.

It can be seen that the focus of the beam from mirror 34 is closest to spot 39 and a portion of the laser power is reflected back into the radar nose. An annular surround 38 of anti-reflective material provides an output coup of the laser beam passing therethrough and traveling towards the beam utilization device.
ler). In the unstable laser cavity formed by the mirror assembly, all of the potential laser power is found in the fundamental mode and all of the available laser energy is focused into the smallest possible spot. In addition, the spot output Kagura provides a high efficiency of beam transmission, reduces multiple axial reflections through the laser rod, and tolerates the occurrence of excessively short nozzles.

The laser assembly also has a Q-switch 41 placed along the optical axis between the laser rod and one of the mirrors 34 and 39. In a preferred embodiment, the Q-switch is placed between the laser rod and the output mirror assembly 33, and the laser rod is better illuminated by a wider portion of the laser beam reflecting between the mirrors. . Those skilled in the art will recognize that the Q-switch may also employ a cross-field electro-optic modulator using a lysium niobate crystal and a single or multilayer insulating thin film polarizer 42. During Q-switch operation, the crystal is brought to a positive voltage with respect to its quarter-wavelength delay level to prevent laser action. Earrings are applied. The switching action is powered by a negative progression step thousand lass generated on command by a control circuit that changes the polarization of the beam and allows laser action. However, it is also entirely possible to achieve non-Q-switched laser operation without removing the Q-switch or thin film polarizer.

Also fixed to the paceplate 11 is a continuous output, visible light, low power laser 46, preferably a helium-neon (HeNe) gas laser. The output beam from radar-46 is oriented 180° along the optical axis.
towards reflector assembly 47.

Assembly 47 includes a pair of mirrors 48 and 49 positioned at a 45° angle to the projection beam from radar 46. The diverging lens 40 and the condensing lens 50 each have
) (located at the entrance and exit of the reflector assembly forming a collimator that makes the diameter of the eNe beam equal to the diameter of the YAG beam.

The H@Ne beam exits lens 50 and is directed through mirror 35 and the radar rod. Both the mirror and laser rod are substantially transparent to the He Ne wavelength (633 nm). Output mirror 33
is also transparent to the H a Ne beam, and the two laser beams exit mirror assembly 33 collinearly.

The beam is passed from mirror assembly 33 through beam diffusing lens 60 to mirror 5 to reflect the beam 90° upward.
2 is used and directed towards the mirror assembly 51. The beam spreading effect allows for a high focus at the surgical location inside the eye, so that only the tissue to be excised or treated is affected by the laser beam.

Divergent beams are also reduced by successive mirror and lens surfaces, and by reducing the energy density of the beam. A photosensor assembly 53 is secured to assembly 51, which receives approximately 1% of the beam energy transmitted through mirror 52.

The output of the photosensor is connected to a controller to provide a closed loop feedback system for re-measuring the laser's energy output with respect to light energy input, as described in the following description.

Referring to FIGS. 1 and 2, the present invention also includes a complete apparatus using the laser described above to enable ophthalmic surgery. The device has a cabinet 56 suitable for housing the power supply and the controls for the device. The cabinet has an upper surface 57 on which a control channel 58 is supported.

A cantilever table 59 extends outwardly from one side of the cabinet. Table 59 is supported by the cabinet in a vertically movable manner to adjust to the height of the patient being treated. The open end shape of the table 59 allows access and use of equipment near the person who is restricted to each wheelchair. This feature is important considering that many patients who require Lehday's ophthalmic surgery are elderly and often physically immobile. The base grate of the laser assembly is secured to the table 59 in a reverse manner below its top. Supported on table 59 is a binocular examination microscope 61, a standard slit lamp assembly 62, and a frame 63 adapted to clamp and restrain the head of the patient being treated. It is recognized that the entire Lede surgical apparatus, which requires no auxiliary equipment for operation and no cooling equipment, can be fixedly mounted on the slit lamp biomicroscope and can be moved vertically therewith. In this way, misalignment problems are reduced and moving mirrors, a source of drawbacks in prior art devices, are completely eliminated. Moreover, the entire device occupies only a small desk space.

Referring to FIG. 8, as the beam advances from mirror 52, it passes through a hole in top 57 and into beam delivery assembly 6.
Go inside 6. Assembly 66 includes a pair of generally parallel mirrors 67 and 68 that provide a laser beam to a double lens that focuses the beam. The beam is then reflected by reflector 71 to a focal point inside the patient's eye. The slit run f7° projector is directed towards mirror 72 which reflects its light source through mirror 71 and into the eye. The surgeon's microscope 61 is directed through mirror 71 into the plane of mirror 72 in order to view the convergence of the beam within the eye and the position and size of the focal point. He Ne alignment beam (
alignment beam) to be conveniently converged to the same point as the YAG mother beam.
The doublet lens is designed and manufactured to have the same focal length at wavelengths of 11064n and 633 nm.

In a preferred embodiment, the selection of such an achromatic lens is effective in allowing its focal diameter to be varied according to the needs of the ophthalmic procedure.

Because the laser assembly is fixed directly to the slit rung assembly, alignment problems are less likely to occur in the apparatus of the present invention. This greater proximity also reduces the number of mirrors used, especially compared to prior art articulating arm delivery devices, thereby further increasing overall reliability.

A distinctive feature of the invention is a complex control system that allows precise selection of the pulse energy, pulse width, and number of flat pulses delivered to the surgical area by the radar. The control device is schematically depicted in FIG. 6, with large functional circuit blocks subdivided into appropriate functional units. Additionally, many power supplies to the circuit are not shown for clarity and brevity.

Referring to FIG. 6, an important feature of the controller is the provision of a microprocessor-controller 76, which requires the necessary RO
M, RAM, and programming to implement the functions described below. The microprocessor-control unit also includes:
Input/Output (Ilo > Section 77, Relay Operating Section 78 and Analog/Digital (A
DC) converter section 79. The controller also has a circuit 81 that includes all of the electrical devices attached to the laser assembly except for the HsNe laser.

This circuit includes a flash lamp 22, a photodiode 53 that senses the energy of the YAG output beam, and a Q-switch 41. In addition, a thermistor is installed in the laser body to measure the temperature there.
) 82 is installed. Circuit 81 further includes solenoids for operating a laser beam attenuator 83 and a shutter 84, both of which are standard items in the prior art, and neither of which are shown for clarity. A relay driver section 78 of the microgrocer controller is connected to both an attenuator 83 and a shutter 84.

Relay section 78 is also connected to He Ne power source 86 and energizes He Ne laser 46 .

The electrical device further includes a pulse-forming network 87 which generates high voltage pulses of predetermined voltage, spacing and number. High voltage flux is supplied to the flash lamp '22 through an inductor 88 and a regularly opening relay contact 89. A relay 91 acting on contact 89 is connected to a relay drive section of the microprocessor-controller. - The Mars formation network receives the high voltage required for Mars from the charging power source 96 through the charging circuit 104.

The flash rung control circuit 97 is a flash rung D2.
Provided for operating 2. Circuit 97 has a timer section 98. Its timer section is Q-
Negative progression to operate the switch driver and power supply 101
Delay and still control Mother Luz's launch. In Q-switched operation, the Q-switch is opened for approximately 70 microseconds after the high-voltage pulse fires the shiflash lamp, and the laser action peaks before Norlus is delivered. enable. The bird section 99 is connected to the virus formation network and activates the virus formation network upon instructions from the microprocessor-controller 76.

Flash lamp control circuit 97 further includes section 102.
(simmer -L/S). The section 102 illuminates the flashlamp and then maintains the ionized state within the flashlamp by supplying a "simmar" current of approximately 30 milliJ amperes from a controlled current source. The rung emission initiation procedure is performed by supplying a sharp pulse to the section 102 Cajalus transformer 103. The pulse transformer generates a mother pulse of several kilogelts. A norm of several kilodelts is sufficient to cause a discharge in the flashlamp and begin operation. (The Q-switch and shutter remain closed.) Then the simmer
The current is 200-400 . f
It is sufficient to keep the lamp in a ready state such that it can be illuminated by the r-rutno-gurus.

Relay contact 89 remains open during the rung emission initiation procedure.
It can be seen that the high voltage that initiates the surge will not damage the pulse forming network. Circuit 97 also has a signal conditioning section 106, which is connected to thermistor 82 and photodiode sensor (27). Section 106 conditions the signals from the thermistor and photodiode;
Analog/
Supplied to digital converter 79. microprocessor
A controller integrates the photodiode signals to directly guide the beam energy of the YAG laser after the beam is fired. The thermistor signal is repeatedly checked to ensure that the radar device temperature does not exceed the operating/4' parameter stored in memory. Additionally, the controller is programmed to determine the voltage from the charging power supply that is to be applied to the flash lamp 22 in order to generate a radar pulse of the desired energy. If the photodiode senses that the pulses generated cause the beam energy to differ significantly from the desired set point, the microprocessor-controller changes the processing to more closely match the measured output. be done. Therefore, the closed feed gear is constantly iteratively calibrating the laser device output to be as precise and accurate as possible.

The controller also has a control/manufacturer 58 connected to the micro-Zoro sensor controller to allow the surgeon to select operating modes,
-Allows selection of Mars energy and spacing, and the like. Panel 58 has indicator light 111, LED
Alternatively, it has an LCD display 112 and numerical display and functionally arranged switches 113. In addition, the control and mains channel circuitry includes a footswitch activation circuit 114 connected to a footswitch 116. The foot switch allows the surgeon to control the firing of the laser device with a pedal rather than by hand.

Referring to FIG. 7, a circuit of pulse forming networks (generally indicated by reference numeral 99) receives the numerical address of one or more of the plurality of mother pulse forming networks from a microprocessor-controller. It has an address decoder 121 and a trigger circuit 122 for each of them. In a preferred embodiment, there are 56 no9rus-forming networks (PF'N);
Each has their own trigger circuit 122. 40
The 0PFNs are connected to 5 arrays of 8 each.
First, it facilitates connection with a binary digital microgrocer. Twelve P 11'N's are each enabled, and four are spares that can be substituted by the microprocessor-controller for any failed PFNO.

Each trigger circuit is arranged in the same way, and each PF
Connected to N.

Each PFN) rigger 122 has an optical isolator 123 connected to the pace of a transistor 124. Capacitor 126 is transistor 124
is connected between the collector of the resistor 127 and the limiting resistor 127, and also connected to the emitter.

The capacitor is connected to a low voltage charging line 128. When network 122 is selected by the microprocessor to provide a flash lamp, all eight PFNs in the array are connected to charging line 1.
28 to a voltage determined by the microprocessor-controller. The address of the selected network is sent to decoder 121, which decoder selects the appropriate P
FN) Ground the IJ Gar signal line 129. The LED of the opto-isolator is triggered, thereby turning on the transistor 124. When transistor 124 is caused to conduct, the charge on the capacitor is delivered to the SGR of each PFN.

Each PFN in functional block 87 has a large capacitor charged by power supply 96 and connected to the flannel lamp via an SCR. When the SCR is triggered, the discharge triggered generates a flash pulse of approximately 50 microseconds in duration.

The intensity of the pulse is related to a predetermined, empirically determined formula for the discharge voltage. This known relationship allows the microprocessor-controller to select the appropriate charging voltage to cause the necessary flash intensity to obtain the desired radar energy.

7 each Ranoshuno J? It can be understood that the laser beam produces one laser output mother laser beam. The microprocessor-controller fires the PFN in a signal fashion or in a continuous, regularly spaced manner to produce an i4 pulse train of predetermined i4 pulse energy, spacing, and pulse width. Q-Each output 4 in switched mode? Regarding Luz, Q
- The switch is opened approximately 70 microseconds after lamp discharge begins. The preferred embodiment laser device has a duration of 5-1
Transmission of 0 n5ec of 9 rus is possible. These mother pulses can be transmitted one at a time, 1 to 10 thousand pulses can be transmitted at intervals of 10 milliseconds, or they can be generated in a repetitive manner at a rate of 3H2.

An important feature of the operation of the present invention is that it can be operated in a free-running mode to produce the thermophysical effects necessary for reeds, their output photocoagulation, and the like. In this "thermal" mode, 100-500 mJ pulse trains of 50 microsecond duration can be delivered between 1-10 microseconds. This operation charges the required PFN to the required voltage, opens the Q-switch and shutter, and
This is achieved by firing PFN at millisecond intervals. The initial lamp discharge causes a significant population of neodymium electrons to rise to the level of laser radiation, and a thousand laser beams are generated. However, the reversal of the radiation band persists temporarily. For example, about 400 microseconds. Rapid flashlamp firing in thermal mode provides the advantage of sustaining this inversion by restimulating the laser before the energy imparted to obtain the electronic inversion is lost. As a result, the invention works very effectively in free-running, "thermal" mode P.

This mode is achieved without any cooling equipment. The total envelope f of a thermal mode gus (taking into account the energy versus time characteristics of the soler) produces a physiological effect equivalent to a long-term thermal mode 1,000 las delivered by a gas laser and the like. In this way, the present invention has flexibility in modes of operation that was hitherto unattainable.

Referring to FIG. 5, the control and bus channel 58 includes an LED readout 131 that indicates the desired t4 las energy setting for the YAG laser.

setting? A button 132 is provided to allow the surgeon to raise or lower the set point. LED reader 133
displays both the pulse width setting and the desired number of pulses. Settings buttons are provided for selecting either display and for changing settings. L E
D readout device 136 is transmitted by a laser.
Display the equal Lus number? It can be reset using the button 137. A plurality of butanes 138 are provided to select the laser power in the cutting mode in which tissue is cut by optical destruction. For the three Gatans, you can choose from one Noculus, a continuous Yarus row of 3■z ratio, or an explosive Gurus. selector butane 13
9 allows the surgeon to select the thermal operation mode. In its thermal operation mode, the laser alone provides a noflux train that produces long-term thermal effects. Switches 141 and 142 respectively provide the YAG laser and operate the shutter. Warning lights 143 and 144 each indicate a problem with the laser radiation and overall equipment. The switch 140 is an operation key for an on-off switch.

[Brief explanation of the drawing]

FIG. 1 is a front view of a laser device for ophthalmic surgery according to the present invention. FIG. 2 is a side view of the laser device depicted in FIG. 1. 3 is a bottom view of the laser assembly of the present invention taken along line 3-3 of FIG. 2; FIG. FIG. 4 is a partially cut away perspective view of the optical pumping chamber of the laser of the present invention. FIG. 5 is a layout diagram of the control panel of the laser device of the present invention. FIG. 6 is a functional block diagram of a control device for a laser device according to the present invention. FIG. 7 is a functional block diagram of a control and supply circuit for the fludge-lamp launcher of the present invention. FIG. 8 is a cross-sectional view of the optical output assembly of the laser device of the present invention. Explanation of main symbols 16. 17... Hemispherical cavity 18... Spherical cavity 22... Flash lamp 26... Laser rod 32. 33. 51... Mirror assembly 38... Anti-reflective coating annular Number of parts 41...
・Q-switch 48.49.52.67.68.72...Mirror 50
...Convergent lens 53...Photo sensor 56...Cabinet 71...Reflector 76...Microprocessor-control device Patent applicant
Patent Attorney Sumio Takeuchi Patent Attorney Tomi 1) Osamu Osamu Paussier & e-Rom Incorporated Agent

Claims (1)

Claims: 1. A multimode laser device suitable for use in ophthalmic surgery, comprising: a) a laser rod fixed in an optical pumping cavity; b) the laser rod in the pumping cavity. C) a highly reflective diffuse reflective coating applied to the internal surface of the pumping cavity; and d) a mirror forming an unstable laser cavity with the radar rod. e) control means for activating said flood lamp with a predetermined voltage, time interval and number of electrical pulses; and f) transmitting a laser output pulse to the eye of the patient to be operated on. A device consisting of means for and. 2. The device according to claim 1,
Further, the control means includes Q-switch means placed between the mirror means and the laser rod, and the control means controls the Q-switch means.
- a device comprising means for bringing the switch means into synchronization in time with the starting of said flashlamp; 3. The device according to claim 1,
4. The device according to claim 3, wherein the optical pumping cavity is generally shaped like a closed continuous curved surface,
A device wherein said surface forms a spherical shape. 5. The device according to claim 1,
The apparatus wherein the laser rod and the flash lamp are placed in close proximity and substantially perpendicular. 6. The device according to claim 3,
Apparatus, wherein the pumping cavity is located within a body member, the member being formed from a material having excellent thermal conductivity and capacity. 7. 1. The apparatus according to claim 1, wherein the coating is made of sulfuric acid barylamno-4 powder and the like.
Apparatus comprising means for firmly adhering the flat powder to said surface. 8. The device according to claim 1, comprising:
The apparatus wherein said mirror means comprises a first concave mirror and a second convex mirror. 9. The device according to claim 8,
The second mirror has a centrally coated spot with a high reflectivity at the wavelength of the laser device, around which a portion of the laser beam passes, and an annular portion with an anti-reflection coating that serves as an output cannula. equipment where it has. 10%. The apparatus of claim 9, further comprising a continuous output gas laser, oriented along the optical axis of the laser rod in accordance with the undulating output beam. device with a controlled output beam. 11. The apparatus of claim 10, wherein the mirror is substantially transparent to the wavelength of the output beam of the gas laser. 12. The apparatus as claimed in claim 1, wherein the laser rod is formed of yttrium-aluminum-garnet and is relatively highly doped with neodymium to form a high gain lede rod. The equipment you are using. 13. The device according to claim 1, wherein the control means comprises a micronolocessor control device. 14. The apparatus of claim 13, wherein the microprocessor-controller opens the Q-switch, starts the flashlamp at close intervals, and Apparatus comprising programming means for enabling said laser rod to emit radar light in running thermal mode. 15. The apparatus according to claim 14, wherein the laser beams are temporally spaced at intervals less than the reduction time of the electron emission band reversal of the laser rod, and The device on which the operation is being accomplished. 16. The apparatus of claim 13, wherein the microprocessor-control device operates the Q-switch means in a synchronous manner coinciding with starting of the flashlamp, in a Q-switch mode. A device having programming means for accomplishing the operations. 17. The device according to claim 13, further comprising a plurality of gurus-forming networks connected to the flash lamp. 18. The device according to claim 17, wherein the virus launch network is arranged in a form that can be called by a binary address. 19. The apparatus according to claim 13, further comprising a photosensor arranged to receive a portion of the laser output/wavelength. 2. The apparatus of claim 19, wherein the microprocessor-controller includes means for integrating the signal from the photosensor to determine the energy of the output master pulse. A device that has 2. The device as set forth in claim 21, comprising feed bar cruge means in the control device, the feed/6 no cruge means being adapted to control the measured energy of the output/4'rus. means for changing the predetermined voltage supplied to the flashlamp when the pulse energy differs from the expected pulse energy. 22. An optical pumping assembly for a laser comprising: &) a laser body member; b) a closely curved cavity disposed within said member; and C) extending through said cavity and co-incident with an optical axis. a laser rod disposed in a straight line; d) a flash run extending through the cavity non-parallel to the laser rod; and e) a high efficiency diverging coating applied on an inner surface of the cavity. Three-dimensional. 2. The assembly according to claim 22, wherein the cavity has a spherical shape. 2. The assembly of claim 22, wherein the flashy run is positioned generally at right angles and in close proximity to the laser rod. 25. The assembly according to claim 2-2, wherein the laser body member is formed of a material with high thermal conductivity and high heat capacity. 26. A laser device for ophthalmological surgery, comprising a)
a grounded mating cabinet for housing the laser electrical equipment and control equipment; b) a table member; and C) means for vertically movably mounting the table member to the cabinet and adjusting it to the height of the patient. d) a slit lamp biological microscope extending upwardly from the Chisol member; e) a small radar attached to the lower surface of the table member; and f) coupling the laser directly to the slit lamp biological microscope. A device consisting of: (7)